MONTANA DEPARTMENT OF ENVIRONMENT A L QUALITY
OPERATIN G PERMIT TECHNICA L REVIEW DOCUMEN T

Permitting and Complian ce Divisi on 15 20 E. Si xth A v enue P.O. Bo x 2 009 01 Helena, Montana 5 9 6 20- 09 01

Col u m b ia Fall s Alum inu m Com p any LLC
20 00 A l um inum Drive
Col u m b ia Fall s, MT 59 91 2

The fo ll owin g tab l e s u m m a rizes the air qu ality progr a m s test in g, m onit o rin g , a n d rep o rtin g re qu ire m ents

app lic ab le to t h is fac i l ity

.

Faci lity Com p liance Requirem ents Y e s N o Co mmen t s

So u r ce Test s Requ i r ed X M e th od 5, 13B,
31 5, 14

Am bient M o n itori ng Re qu ired X POM

COMS Requir ed X

CEMS Re quired X

Sched u l e of C o m p lian ce Re quire d X A ppen d i x I

A nnua l C o m p lia nce Cert ific ati on an d Sem i an nu al R e p o r tin g R e q u ire d X

M o nt hl y Rep o rt i n g Req u i r ed X

Quarterly Re p o rtin g Req u ire d X

A pplicable A i r Qual ity P r ogr ams

A R M Sub c ha pter 7 Prec ons truct i o n Perm itti ng X Perm it 265 5-0 5

New Source P e rfor m ance Standards (NSPS) X

National Em ission Standards for Hazardous Air Pol l ut a n ts (NESHAPS) X 40 CFR, Subp art M

M a xi m u m Ac h i ev ab l e Con t ro l Techn o l ogy (M ACT) X 6 2 FR 5 2 4 0 7 &
65 FR 15 68 9 Major New Source Review (NSR) X

Risk Ma nag e m e nt Plan Re quire d (R MP) X

Acid R a i n Ti tl e IV X

State Im ple m e n tation Plan ( S IP) X MT State SIP

OP2655- 01 1 Date o f Decisio n : 0 5 / 2 1 / 0 3

E ffective Date: 06/21/03TABLE OF CONTENTS

SECTION I. GENERAL INFORMATI O N

........................................................................................................... 1

A. P URP O SE

............................................................................................................................... ......................... 1
B. F A C ILITY L OC ATI O N

............................................................................................................................... ...... 1
C. F A C ILITY B AC KG R O U N D I NF ORM A TI O N

..................................................................................................... 1
F. C OMP L I A NC E D ESIG NA TIO N

........................................................................................................................ 5

SECTION II. SUMMA RY OF EMISSION UNITS

............................................................................................. 6

A. F A C ILITY P ROC E S S D ES CRIP T IO N

................................................................................................................ 6

EMISSION UNITS AN D POLLUTION CONTRO L DEVICE IDENTIFICA TION

.................................... 7

B. C A TEG OR ICA L L Y I NSI G NI FI C A N T E MITTI N G U NI TS /A CTI V ITIES

............................................................... 8

SECTION II I. PERMIT CONDITIO N S

................................................................................................................ 8

A. E MISSION L IM ITS A ND S TA ND ARD S

............................................................................................................ 8
B. M O N I T ORI N G R EQ UIR E ME N T S

..................................................................................................................... 9
C. T EST M E T HOD S AND P ROCE DU RE S

........................................................................................................... 15
D. R EC OR D K E E PI NG R EQ UIR E M E N T S

............................................................................................................. 15
E. R EP OR TIN G R EQ UI R E ME NT S

...................................................................................................................... 15
F. P ROP O SE D P ER MIT C OMM E NTS

................................................................................................................. 15

SECTION I V . FUTURE PERMIT CONSIDER ATIONS

................................................................................. 16

A. MACT S TA ND ARD S

............................................................................................................................... .... 16
B. NESHA P S T A N DAR DS

............................................................................................................................... 16
C. NSPS S TAND AR DS

............................................................................................................................... ...... 16
D. R ISK M A NAGE MEN T P LA N

......................................................................................................................... 16

SECTION V. 

### OTHER PE RMIT C O N S IDER ATI O N

................................................................................... 16

OP2655- 01 2 Date o f Decisio n : 0 5 / 2 1 / 0 3

E ffective Date: 06/21/03SECTION I. GENERAL INFORMATI O N

A. Purpose

B.

C. This doc um ent est a bl ish e s t h e basis f o r th e de cisi ons m a de re gar d in g the ap pl ica b le requirem e nts, m onitori ng pla n , and c o m p li anc e st at us of em ission units affect ed b y the op erati n g p e rm it prop osed f

o r t h is f acil ity

. The
doc um ent is i n te nd ed f o r re ference d u rin g revi ew of t h e prop osed p e rm it by the EPA and th e p u b lic. It is als o int e n d ed t o pr ovi de ba ck gro u n d i n form ati on no t i n cl u d e d i n t h e op erat ing perm it and to do cum e nt i ssues t h at

m a y becom e im portant dur i ng m odifica ti ons or ren e w a ls o f th e p e rm i t . Co nclu si ons i n t h i s do cumen t are base d o n i n for m ation prov id ed i n the ori g i n al ap pl ica tio n su bm itted b y Colum b ia Falls Al um inum Co m p any , LLC (CFAC), on Jun e 12, 1 9 9 6 , a n d o n a ddi ti ona l s u b m ittals rec e iv ed on Apr il 17 , 1 9 9 7 , Ju ne 2 5

, 19 99,
A ugust 2 5

, 19 99, Febru a ry 14, 2 0 0 0 , M a rch 15, 2 0 0 0

, A p ril 4

, 2 0 0 0

, an d t h e m i nor m odifica ti on app lic at io n recei ved on A u gust 29, 2002. T h e Al um i num MACT was prom ulgated on Oct obe r 7, 1997. The MACT requirem e nts for th e V SS2 c a te gory of A l u m inu m Reduc tio n Pla n ts ( 4 0 CFR Part 63, Subp art LL) h a ve be en inc o rpor ate d i n to CFAC' s operat i n g p e rm it.

F a c i lity L o c a t i o n

The CFAC fa cili ty is loc a te d i n Sec tio n 3, Townsh ip 3 0 North, Ran g e 20 Wes t , Fl at hea d C o u n ty

, Mon t a n a. The UTM co o r dina tes f o r th e faci lity are 7 12. 2 k m Easti ng, 5 3 6 3 .8 km Northi ng (Zo n e 11). Th e el eva tio n of
the pl an t is 31 08 fe et, with t h e neares t si g n ific an t c o m p l e x t e rrain , Te a k et tle Mo un ta in, ris i n g a ppr oxim a tely

20 00 ad dit i o n a l fee t a b o v e t h e val l ey flo o r an d CFA C

.

The fa cil ity is adj ace nt to th e com m unity o f Col u m b ia Falls, a n d t h e Fl ath ead Ri ver p a sses Sou t h of CFA C ' s

m a in com p lex. There are tw o PSD Class 1 airshe ds near by the faci li ty , the cl osest b e ing Glac ier N a ti ona l Park

w hose bo un da ry is appr oxim a tely 8 m iles East of CFA C . Th e o t h e r Cl ass 1 a i rshe d i s the Bo b Mar s hall
Wilder ness, a nd it is wit h i n appr oxim a tely 25 m iles of C o lum b ia Fal l s.

Facility Background Information

CFAC oper a te s five Vert ica l Stud Sod e rbe r g po tl ines at t h e C o l u m b ia Falls p l a n t. E ach po tl ine ha s 12 0
ind i v i d u al ce ll s tha t prod uce alum inum by the H a ll-H e ro ult pro cess. A n n u al op erat in g ca pa city is

appr oxim a tely 18 5, 00 0 t ons of A l um inu m base d o n a n a v erag e c u rrent efficie n cy of 90. 5%. Th e A n aco nd a Com p any init i a lly c onstr uct e d tw o p o t l i n e s (' 53-55), w i t h start u p o ccu rring i n 19 55 ( W est Pla n t). A third
pot li ne w a s co nstruc te d a nd its st artu p o c c u rred i n 19 65 ; the fin a l two pot li nes were cons truc ted sh ortly aft e r the th ird, wi th startu p occ u rring i n 1 9 6 8 (E ast Pla n t).

The H a ll-H e roul t process c onsis ts of pass ing an el ect r i c curren t t h ro u gh alum inum oxi de ore, or a l um ina (Al 2 O 3 ), d i sso lve d i n m o lten cry o lit e. The redu cti o n pro cess is acc om plis he d i n a V e rtica l St ud S oder b erg
st yl e po t

. Soderb erg t e ch no lo g y descri bes t h e t y p e o f c o nsum able carb on an ode use d in th e pr ocess

. CFA C
Soderb erg pot s (cells) ha ve 60-t on an od es (Positi ve E l ec trode) an d 10 0

- ton cat ho des (nega t i v e ele c t rode).

The cel ls or “ pots ” are h ous ed i n bu ildings cal led potroo m s . Two pot r oom s are connec ted el ectri c a lly i n seri es to form one potl ine

. T h eref ore, a t CFAC there are 10 p o tro o m s that c o m p rise th e 5 pot li nes. Em i ssions from each pot are divi de d i n t o tw o ca te gori e s, pri m ary e m i ssions a n d sec o ndary em issions. Pri m ary e m issions are
capture d a t t h e pots a n d routed to the pri m ary air poll u tio n c o n t rol sy stem , the A 3 9 8 dry al um ina scrubb ers. Secondary em issions are f u giti ve e m issions fro m the po t s tha t are ve nt ed out t h e ro o f line of t h e p o t room s

Alu m ina is fe d i n t o a m o lte n b a th of cry o lite , a n d he ate d t o a b o u t 17 4 0 °F (94 9 °C). Throu g h th e elec troc hem i cal pr ocess, el e c tric ity pass es fro m the a n ode t o the ca thode , ca usi n g t h e a l um inu m to be reduc e d.
The alum inu m m e tal sin k s bel o w th e cry o li te bat h to f o rm a m o lten alum inu m “ p ad”. Th e rem a i n in g oxy ge n
atom s bond w ith th e c a rbo n fro m the an od e of t h e ce ll to form carbon dio x i d e, w h ic h is ve nte d fro m the p o t to the prim ary em ission c ontr o l sy stem . Carbon Mo no xi d e is a l so ge ner a te d, a n d is c o m busted at the cel l. O t her

em issions fro m the pro cess inc l u d e bo th p a rtic ula t e fl uo ride an d g a seo u s hy dro g e n fl uori d e as w e ll as hy drocar bo n e m issions co nt ain i n g p o ly cy clic org a n i c m a tter. T h e a l u m inu m m e tal is siph on ed from the p o t

OP2655- 01 1 Date o f Decisio n : 0 5 / 2 1 / 0 3

E ffective Date: 06/21/03every 4 8 h our s and tra n sp orted to th e c a sti ng D e partm e nt, w h ere it is c a st i n t o i n g o ts of v a rio u s siz e s, sha p es and al loy s . T y pical ly ea ch pot pro d u ces a ppro x im ately 17 00 po un ds of al um inu m per d a y

. Ea ch po t is ta ppe d

every o t her da y , w h ich resul t s in a po t o p e r atio na l cy cl e of 48 h ours.

The fa cil ity u nderw e n t si gn ifica n t im provem e nts be tw e e n 19 76 an d 1 9 8 0 , w h e n all alum inu m reduct i o n c e lls
and p o tl in e o p e rati on w e re c o n v erte d t o Su m ito m o Tech nol ogy

. Sum i tom o Techn o l ogy w a s a d o p t e d by th e Anaco nd a C o m p any in a n e ffort to r e d u ce part icu l at e a n d flu o rid e em issions from the faci lity

, an d to s how

com p liance with Mont ana’s stringen t Fl uori d e Stand a rd . Th e Su m i t o mo Tech no lo gy, p u r ch ased by AAC fro m the S u m ito m o Chem ical C o m p any LTD, i s a c o m b ina tion of engineeri ng (struct u ral) cha n ges t o t h e al um inu m reduc ti on cel l s , op erat io nal and pro cess c h an ges, an d ra w m a terial changes, for Sode rberg al u m inu m reduct i o n cells an d po tli nes.

Other benefit s , besides reduced power consu m ption and re duced em issi ons (power co ns u m ption, as clai m e d b y the Su m ito m o Co m p an y , cou l d easily be reduced by 15- 20 %, and em i s sions of h y dro carbon sm oke and fluoride could be reduced by 50%...), realized by AAC when adopting the Su m i to m o Technol ogy we re a dra m atic
increase in cell operating lifespan and a reduction in m a n- h ours requi red to operate and m a intain the facility.

During th at s a m e ti m e perio d (19 76- 19 80) , th e Ana c o n d a Com p any al so co nv erte d t h e C o l u m b ia Falls fac ili ty fro m m u lticl o nes a n d wet sc rubb ers to Alc o a A3 98 Dry Alu m ina Scru bbers as its pri m ary e m ission c ontr o l
dev i ce , a nd in stall e d te n dry scrub b ers o p e r atin g i n tw o grou ps: f our d r y scrubbers f o r th e West Pl ant an d si x dry scrubbers for the East Plant. Dry Al umi n a Scru bb ers are d e si gn at ed as appropri ate prim ary polluti on

con t rol de vi ce s for pur poses of t h e A l um inum MA CT.

Prec onstruction Perm it Hi story

The alum inu m sm elter was co nstruc te d p r ior to 1 9 6 8 a nd has bee n operat ed as a n exist i ng s ourc e since tha t tim e. The fac i lity pr ocesses alum ina ore u s ing el ectr o ly t i c re duc ti on c e lls to pro duc e al um inu m ingots

. CFAC
has b e e n iss u e d ei gh t prev io us perm its from 1976 to 1 9 9 0 . A descri pt i on of t h ese pr evi ous perm its is as
follows:

Perm it #97 2 w a s issue d o n July 1 6

, 19 76, for th e i n sta l l a ti on of a dry scrubb in g sy st em - Su m ito m o Sod e rber g process to co n t rol e m issions fro m the red u c ti on cel ls.

Perm it #16 15 w a s issue d o n June 25

, 19 81, for th e c o n v e r sion of t h e un loa d er bag h o u s es co ntro lli n g t h e #1
and # 2 a l um ina u n lo ad in g sy stem s fro m sh aker ty pe bag h o u ses t o puls e -jet ba gh ouse s

.

Perm it #16 20 w a s issue d o n Septem ber 24, 19 81 , for t h e insta l l a ti on of a ba gh ous e t o con t rol em issions from
the coke unloa d ing ar ea.

Perm it #16 72 w a s issue d o n A p ril 2 0

, 19 8 2 , for the c ons truct i o n of a n e w alum inum casti ng faci lit y

. The
facil ity was n e ver c onstr uct e d a nd th e p e rm it will b e re vo ked

.

Perm it #16 88 w a s issue d o n July 1, 1 9 8 2 , f o r th e c ons tru c ti on of a tem porary al um ina stora g e b u il din g a n d t h e associ ate d a l um ina transfer opera ti on. T h e tra n sfer op er ati on has bee n com p leted an d t h e bu ild in g is curre ntly
bei ng use d for ot her p u rp ose s and CFA C h a s no i n te nt io ns of usin g it t o st ore a l um ina in t h is m a nner aga i n

. This perm it will be r e v oke d.

Perm it #18 20 w a s issue d o n O c tob e r 2 1

, 1 9 8 3 , for the i n stall a ti on of th e w e st c o n v ey or stora g e s i l o ba gh ouse , the co ke an d c o al dis t rib u t i o n b a g h o u se, a nd the p a ste pl ant D r ac o dus t co ntro l sy ste m

.

Perm it #25 68 was issue d o n April 1 0

, 19 8 9 , for the i n sta llat i o n of a we t scru bber to c ontr o l e m issio n s fro m the
paste plant are a

.

Perm it #26 55 was issue d on Dece m b er 13, 1990, for t h e inst a l l a ti on of an a l um ina re cycle baghous e and a bag h o u se to c ontr o l em issio n s fro m the Tr eatm e nt of A l u m inum in Cruci b les (TA C ) sy stem

.

OP2655- 01 2 Date o f Decisio n : 0 5 / 2 1 / 0 3

E ffective Date: 06/21/03Perm it Alterat i on #2 65 5

- 01 was i ssu ed on M a rch 3

, 19 96 , fo r t h e co nversi o n o f th e ex i s ti ng w e st co n v e y o r

stora g e ba gh o u se i n the west al um ina unloader st at ion a n d t h e bu cke t e l eva tor ba gh ou se i n th e ea st al u m i n a

u n l o a d e r syst em fro m sh ak er-t yp e bagh ou ses t o pu l s e-jet b a gh ou ses. Th e w e st co nve y or st ora g e ba gh ouse will a l so be r e loc a te d from silo # 2 t o si lo # 3

.

Also i n cl ud ed in this perm itting ac ti on is a sy ste m na m e cha nge . T h e #1 an d #2 al u m ina un lo ad in g syst em s referred t o i n Perm it #1615 are ac tually t h e west a nd eas t a l um i na un lo ader ba g h o u ses , respect ive l y. These bag h o u ses w e re au th orize d t o b e m odified fro m shaker-ty p e ba gh ous e s to pu lse-je t bag h o u ses by Perm it
#1 61 5. A m o re com p lete de script io n of th e u n lo ad er sta t ion co ntr o l sy stem s is co nta i ne d i n t h e an aly s is for

Perm it #26 55- 01.

Perm it #26 55- 02, issued on July 5, 1997, aut hori zed t h e repl acem ent of the e x ist i ng anode pin cle a ni ng

m achine with a new m achine whic h wi ll c l ea n t e n anode pi ns a t a tim e

. The c l ea ni ng system consists of a shot bl asti ng m achine for t h e rem oval of s cale fro m the an ode pi ns. P a rtic ula t e em i ssions from the syste m are

con t rol l e d wit h a cartri d g e -t y p e fabri c fil t e r. Em issions fro m the fil t e r will be e x h a uste d i n si de th e pi n clea ni ng room

.

Em issions fro m the faci li ty are expe cte d t o decreas e from the pi n cle a n ing m achine repla cem ent. Beca use the

sy ste m will ve nt insi de th e p i n c l e a ni ng ro o m , a de creas e in t h e part ic ula t e ex haus te d t o a t m o sphe re is

ant i ci pa ted

. T h e e x is tin g sy ste m current ly ex haus ts d i re ctly t o a t m o sp here.

A f ter issua n ce of t h e D e part m e nt' s prelim inary de term inati on, CFA C requ este d t h a t t h e w e st al um ina e l e v at or bag h o u se id en tifie d i n Sec t i on II.C. 1 of t h e perm it be c h ang e d to th e w e st co nv ey or stora g e ba gh o u se t o be

cons iste nt w i t h t h e cha n g e s m a de in Perm it # 2 6 55-0 1

.

On Jun e 2 7

, 1 9 9 6 , CFAC s u b m itted a per m it app lic ati o n t o m odify th e pas t e pla n t a n o d e dust co nt rol sy stem

. This a p p l i cat i on w a s gi ve n num ber 265 5-03

. Bas e d on the s o o n to be issue d d e m i nim i s rule - A R M
17. 8. 70 5(1)(q), th is pr oje c t w oul d n o t re q u ire a p e rm it t o b e iss u ed

. CFA C det e rm ine d t h a t c onst r ucti on w o u l d

not com m ence u n ti l aft e r t h e rul e w a s pr o m ulgate d a n d withdrew the applic at ion. T h erefore, Perm it #26 55- 03
was never issued.

Perm it # 26 55- 04 all o w e d C F A C to re pla c e th e e x is tin g w e t scru bber on the p a ste pl ant m i xers w i t h a dry co ke pit c h f u m e scrub b er for t h e con t rol of part icu l at es a nd p o ly cy cli c or ga nic m a tter (PO M ). The dry scrub b er is require d by 40 CFR Part 63, Subpart LL - National Em ission Standards for Hazar dous Air Pol l ut a n ts for
Pri m ar y Al u m i n u m S m el t e rs. The new d r y scru bb er al so control l e d em i ssions from the extruders, w h ic h is currently uncontrolled.

The e m issions fro m the m i xers and e x truders are c o ll ect ed w i t h ho ods an d ro ute d t o a ve nt uri re act or w h ere coke fi nes are inj ect ed. T h e pit c h f u m e binds wit h t h e coke parti c les and is then col l e c te d wit h a pulse-jet bag h o u se. A f ter c o ll ect io n, the s o l i ds are returne d to th e past e p l a n t pr od uct i o n sy ste m and use d as co ke in th e

m a nufactur e o f ano d e bri que ttes.

Perm it #26 55- 04 all o w e d th e rep l ac em ent of th e w e t scrub b er, a n d als o al low e d t h e routi n g of a pr evi ous ly

unc on trol le d s ource , w i t h a new dry scru b b er. T h e new dry scrubb er s i gn ific ant l y de creased t h e e m issions of
bot h parti c ulat e and POM fr o m the past e plant.

Perm it #26 55- 04 also ch an g e d A t t a c h m e n t 1 to rem ove report i n g p a ra m e ters no l o n g er n eed ed by the

D e partm e nt. The dea d l i ne t o su bm it CFAC’s ann u a l fl u o ride- i n-fora g e da ta w a s als o c h an ge d fro m February 1

to March 1, a n d t h e ru le ref e rences in th e p e rm it were al so up dat e d to co rresp on d with th e n e wl y reco di fi ed Air Qu ality Ru les.

Perm it #26 55- 05 w a s issue d on D e cem ber 26, 1 9 9 9 , for t h e tr ansfer of ow nershi p of Col u m b ia Fall s A l u m inum Com p any (CFAC) to G l en cor e A G

. Th e fa cili ty has be en renam e d Col u m b ia Fal l s A l um inu m Com p any LLC, a nd is refer r ed to as "CF A C" within th is perm it. CFAC inform ed the De partm e nt of t h e

OP2655- 01 3 Date o f Decisio n : 0 5 / 2 1 / 0 3

E ffective Date: 06/21/03ownershi p cha nge in a let t er dat e d Apr il 16 , 1 9 9 9 , a n d ag ain in a fa x tra n sm ittal da ted May 2 6

, 19 99 . Th e l a st

com m unicati o n i n d i ca ted t h at t h e ch an ge of ow ners hip w oul d o ccur n o la ter tha n J u ne1

, 1 9 9 9

. Th e D e partm e nt a c kn ow le dg ed the ch an ge of ow nershi p in a le tter to CFA C dat e d J u n e 2 2 , 19 99.

Title V P erm i t History

O n N ovem b er 6, 20 01 , Ti tle V O p erati n g Perm it #OP26 55-0 0 was iss u ed to CFAC. The perm it in clu d e d a ll

app lic ab le co n d it io ns u n d e r t h e T itl e V of t h e C l ea n Air Act.

D. Current Per m i t A c t i o n

O n N ovem b er 28 , 2 0 0 1

, CFA C requ este d a m odific a ti on to Perm it #O P265 5-00 . T h e req u est w a s for the

re m oval of th e foll owin g i t e m s as attac h m e nts to th e Ti tl e V perm it: Appe nd ix F – C F AC MACT

Im plem entati o n Pla n ; A p pe n d ix G
– CFA C MA CT Q u i c k R e feren ce G u ide ; A p pen d ix H – St artu p, Sh ut dow n and Ma lfun ct i on Pl an (SSM ); A ppe nd ix K – Po llu ti on C ontr o l D e vic e Inspec ti on & Mai n te na nce Plan. Although the hard copies of thes e a p pendi ces have b een rem oved from the p e rm it, the cont ents of t h e appendic es re m a in appli c a b le re quirem e nt s as sta t ed i n t h e T itl e V O p erati ng Perm it #O P26 55-0 1

. A hard

copy of th e fo re m e ntio ne d app e n d ic es, ar e avai lable at t h e fo ll owin g l o ca tio ns:

The D e partm e nt of En viro n m ental Q u ali t y Perm itting an d C o m p lia nce Divisi on Ai r an d Wast e M a nagem e n t Bu reau 15 20 E

. Six t h A v e. H e lena , M o n t ana 5 9 6 20-0 9 01

Burea u Ph one #: ( 4 0 6 ) 4 44- 34 90

OR

Col u m b ia Fall s Alum inu m Com p any , LLC
20 00 A l um inum Drive
Col u m b ia Fall s, Mo nt ana 5 9 9 12
Phon e # : (4 06 ) 892- 82 11

In Section III, B5, C5, D7, G 3 , N4, and O3, the per m it language was changed fro m “CFAC shall continually

opera te an d m a in tai n t h e ba gh ouse in ac c o rda n ce wi th Appen d i x K o f this perm it” to “ C FAC sha ll opera te an d

m a intai n t h e b a gh ous e i n a c c orda nc e w i t h A ppe nd ix K of th is p e rm it”.

In Appe nd ix J “ P otlin e R oof Vent Op ac ity Com p lianc e De m onstratio n”, th e l a st se nte n ce was c h ang e d from

“ C FA C shall perform daily visu al s u rvey s foll ow in g t h e proc ed ures o u tl ine d ab ove : to “ C FA C sh all perform
dai l y vis u al o b serva t i ons in a m a nner sim ilar t o t h e Met h o d 9 pro ced u r es ou tli ne d a b o v e a n d it

is un dersto od by all par ties t h at these dai l y vis u al obse rvat io n s are no t M e th od 9 ob serv ati o n s .”

In Section III.I.8 the language was rewr itten to state “Method 9 tests shall be conducted in ac cordance with the

Mon t a n a So ur ce Tes t Prot oc ol a n d Proce d ures Ma nu al. Met h o d 9 tes t reports s h al l b e m a inta in ed on s ite an d

m

u st be su bm itte d t o t h e D e partm e nt up on requ est. ”

In Section III.H.5, the perm i t lang uage was updated to be consiste nt w ith Section III.I.5. Perm it # O P2 65 5

- 01
will re pla ce P e rm it #OP265 5-00.

E. Taking and Damaging A n alysis

HB 311, the Monta n a Private Property A ssessm e nt Act

, re qu i r e s an alysi s o f e v ery proposed sta t e age n cy adm i nistrati ve rule, p o li cy , p e rm it con d i tio n or perm it de nia l

, perta i n i n g t o a n e n v i ro n m ental m a tte r, to det e rm ine w h eth e r th e st ate acti o n c onst i t u tes a t a k i n g o r dam a ging of priv ate real p r operty t h a t re quires

com p ensati on un der t h e Mo nta n a or U

. S. Cons tit ut io n. A s part of issu ing an o p erat i ng perm it, the D e partm e nt

OP2655- 01 4 Date o f Decisio n : 0 5 / 2 1 / 0 3

E ffective Date: 06/21/03is req u ire d t o com p lete a Ta kin g a n d D a m a gi ng Ch eck li st. A s req u ire d by 2-10-1 0 1 thro ug h 10 5, MCA

, t h e D e partm e nt h a s co nd uc ted a pri v at e pr op erty tak i n g a n d d a m a gin g as sessm e nt an d has d e t e rm ined t h ere are n o tak i n g or dam a gi ng im plicat ions . T h e che c kl ist w a s co m p leted o n M a y 5, 20 00.

F. Co mplia nce Desig n a t io n

The CFA C fa cili ty w a s i n sp ecte d on J u n e 22, 2 0 0 1 , Ja nu ary 26, 20 00

, and Sept em ber 17, 20 0 2 , a n d
det e rm ined to be i n com p lia nce w i th th e t e rm s and c o n d iti ons of i t s Preco nstru c ti on Perm it # 26 55 -05. The
facil ity has be en c o n d u c t i n g test in g for Fl uori d es a n d PO M on th e A 3 98 dry scrub b e rs an d t h e M e th od 14

m a nifolds to d e term ine com p li anc e wit h 4 0 CFR Part 6 3

, Sub p art L L

, the "Al u m i nu m MACT.” T h e

com p liance d a te for the A l u m inu m MA CT w a s O c to be r 7, 1 9 9 9

, an d com p liance re porti n g is perf orm e d on a quart erly bas i s. Th e A l um inum MA CT allow s 45 day s to prepare a n d subm it the re port after t h e concl u sion of
the r e p o rti ng quart er. CFAC id en tifie d in Rev i si on 2 of the i r MACT I m ple m entati o n Pla n (IP) tha t t h e fac i l ity

w oul d d e m onstrate com p lia nce w i th th e 5

- line (aver a ge ) Fluori d e e m ission lim it for VSS2 facil iti es, a nd th e sing le li ne POM em ission li m it for VSS2 facil iti es.

CFAC has s ubm itted ( t w o ) additional revis i ons to their IP si nce J u

ne 2000. CFA C subm itte d r e vis i on 3 to the IP

, by
fax

, o n June 14, 2000 , and in th at sub m ittal ind i cated th at th ey were electing to perfo r m POM em ission averaging

,
a

nd t h at the y wou l d d e m o n s t r ate co m p l i anc e wi th the five -line POM em i ssi on li m i t (C FAC ele c ted to de m o n s trate

c o m p lia nce with th e sing le -l in e POM li m i t p r i o r to th e IP re vi sion 3 sub m i ttal )

. Th e Depa rt

m e nt i s a llowe d 120
d a

y s to review and either ap prov e o r d i s a p p r o ve IP re v i s i on s, a n d pr i o r to respo nding , CFAC sub m itted an additional IP revision (revision 4 ) to t h e Dep a rt

m e nt

, a s we ll as an upd ate d SS M. A r e vision 5 of CF AC' s IP was
sub m itted on October 2, 2000

. The earlie st that th e five-lin e POM em issio n lim it would hav e b een applicable,
allo wing a 120-day d ecisio n pe riod, is October 12, 200 0 (4 th quarter o f 2000 ).

CFAC has s u b m itted se vera l MACT c o m p lia nce rep o rts. The first re p o rt, rec e i v e d o n Febru a ry 11 , 2 0 0 0

, ind i ca te d t h at three p o tl in es were no t i n c o m p lianc e wit h the si ngl e l i n e lim it for POM, VSS2 ca te gory alum inu m reduct i o n p l a n ts, duri ng th e l a st qu arter of 19 99. Th e first r e port d i d in dic a te th at CFA C w a s in

com p liance with th e fl uori d e em ission lim it (fiv e -po t l i ne avera g e). CF AC has not be en a b l e t o de m onstrate

com p liance with th e si ng le l i ne POM em ission lim it, or t h e fi ve-l ine av erage POM e m ission lim it, up thro ug h
the da te tha t t h e pla n t s u sp e nde d opera ti o n s i n Ja nuary 20 01. C F A C h a s , h o w e v e r , d e m o n s t r a t e d c o m p l i a n c e with the five-li n e fluoride e m ission li m it sin ce the MACT co m p liance da te.

CFA C ini tia ll y assu m e d th a t t h e s ource of the i r PO M pr obl em lied i n t h e t e sti n g e qui p m ent, m e tho dol ogy , or

ana l ysis. T h e facil ity has be en perform ing ext e ns ive i n -h ou se test in g, an d al so has a co nt racto r perfo r m i n g testi n g , i n a n a ttem p t to det e r m ine th e so urce of POM tes t resul t discre pan c ies an d t h e hi gh POM t e st resu lts. CFAC has also identified several other possible contribu ting sources for their higher POM test result s, including operation of the Paste Plant dry coke scrubb er, a new supp lier of coal tar pitch, changes in operation, and the variability intrinsic to Method 315 (POM te st m e thod).

CFA C tem porarily shu t dow n 2

. 5 po tli nes in the fall of 2 0 0 0 d u e to hi g h p o w e r c o sts. CFA C sh ut d o w n (tem porarily ) the r e m a ini ng 2.5 p o tl ines i n Janu ary of 2 0 01, als o as a r e sult of hi gh p o w e r cos t s. C F A C has
ind i ca te d t h at the f aci lity int e nds to req u es t t h e EPA t o r e vise t h eir cur r ent POM em ission lim it, su ch t h a t
19 99/ 20 00 y ear test in g d a ta shal l be used to es ta blis h a n up dat e d V SS2 PO M em ission lim it. U p o n suc h dat e as the fac ili ty com m e nces operat ions (an t i c ip ate d st artu p d a te of Ja nu ary , 20 02), th e y m u st dem onstrate

com p liance with ei ther th e e x ist i n g POM l i m it, or t h e pr op osed /new P O M lim it w ith in a reas ona bl e per i o d of
tim e (180 d a y s ) after start u p

.

The facility wi ll be required t o deliver a plan to resolve their POM co m p liance issues. A co m p liance schedule is provided in Appendix I of Operating Per m i t #OP2655-00. T h e D e p a r t me n t u n d e r s t a n d s t h a t E P A h a s a p r i m a r y role in esta bl ishin g a rev i sed POM e m ission l i m it, a nd th at EPA m a y im pose alt e rna tiv e t i m e lines for a

com p liance d e m onstratio n b a sed up on th ei r assessm e nt o f this issue

, t h e tes t d a ta co ll ecte d th us far, or o t her
relev a nt d a ta

. The De partm e nt or EPA m a y det e rm ine t h at th e t i m e fram es ident i fie d in th e c o m p liance
sche dul e m a y nee d t o be a l t e red, dep e n d a n t u p o n EPA ' s respo n se to CFA C ' s request, CFA C ' s actua l startu p dat e , or ot her perti n e n t issue s

.

OP2655- 01 5 Date o f Decisio n : 0 5 / 2 1 / 0 3

E ffective Date: 06/21/03SECTION II. SUMMA RY OF EMISSION UNITS

A. Faci lity Pr oc ess Descripti o n

Petrole u m Coke a n d Co al T a r Pitc h are tr ansp orte d t o C F A C for the p r odu cti o n of a n o d e briq uet t e s . Th e c o k e is p u lv eriz ed by bal l m ills p r ior to b e in g m i xed wit h t h e he ate d Pi tch

. Th e m i xture is t h e n e x tru d e d i n t o a water ba th , a n d t h en tra n sp o r ted by co nv e y or to in div i d u al s t ora g e lo c a ti ons for th e West Pla n t po tli nes a n d
East Pla n t potl ines. The a n ode briquet t es a r e then loa d e d in to truc ks t h at fee d t o the t op of ea ch of t h e Soderb erg a n o d es o n c e e v er y 48 ho urs. U n reac ted A l u m ina is br ou g h t by rail to th e East an d We st Plan t unl oa der a n d s t orag e si lo sy s t em s. Fro m those u n l o a d i ng and stora g e lo cati ons , t h e al u m ina is conveyed (air slides) to th e West a nd E a st Plan t dry scru bbi ng sy stem silos prior to b e in g i n j ect ed i n to t h e A l c o a A 398

react ors. T h e reacte d alum ina is t h en fed to st orage si los, and ult i m a t e ly to ore i ng t r ucks tha t fee d t h e re act ed

ore t o t h e po ts on ce e v ery 3 ho urs.

The fi ve potl i n es a t CFAC each have two potroom s, a nd ea ch potroom has 60 re ducti on cel ls, or pots

, for a

tot a l of 6 00 p o ts for the pro duc ti on of a l u m inu m . The r e du cti o n pro c ess oc curs w h en t h e 1 20 po t s tha t

com p rise one pot li ne are su bje c te d t o a c o nti n u ous ( d ir e c t) c u rrent in excess of 10 0, 00 0 am ps (100 K A ) . The
pots are conne cte d i n seri es, with the v o lt a g e drop across eac h p o t cl os e to , b u t ty pi c a lly gre a ter th an, 4 vol ts. This very hi gh ele c tric al curr ent produces a po t e n v i ronm ent of a ppr oxi m a tely 95 0°C.

Pots are ta ppe d once e v ery 48 hours, wit h the m e tal the n goi ng to one of si x cas ti ng furnaces . T h e m o lten
alum inu m can the n eit h er be sent d i rect ly t o cas ti ng, or fl uxe d a n d al lo y e d pri o r t o ca stin g. Cast in g of m o lten
alum inu m can occ u r i n a n y of six cast i ng pits. T h e T- i n gots an d Sh eet in go ts from castin g are t h e n sent t o

saw s for cut t i ng to le ngt h, t h en sta c ke d i n a st orag e y a rd for sh ipm e nt to CFA C cus t o m ers.

O t her n ecessa ry potl i ne ac ti vit i es to m a int a in th e red u c t i on cel ls (p ots) are Pin Pul l i n g, Ja ck Sl ip pi ng, A n o d e Blow d o w n , C r ust Brea ki ng , Skirt C h a n g e s, Burn er Cl ea ning, and Fl oor Sweeping. Ancil l ary act i v it ies

necess a ry for CFAC to m a inta in al u m inu m produc tio n are p i n cle a n i ng an d p o t r e b u il di ng, t o n a m e only two.

OP2655- 01 6 Date o f Decisio n : 0 5 / 2 1 / 0 3

E ffective Date: 06/21/03Emissi on Units and Polluti on Control D e vi ce Identifi cation

The em ission uni ts reg u l a te d by t h is perm it are t h e fo ll o w ing (A RM 1 7 .8 .1 21 1).

Emission
Unit ID Emission Unit

De sc r i ption Pollution Contr o l Devi ce or Pract i ce
EU001 Ball Mill North - MH01 Baghouse

EU002 Ball Mill S outh - MH02 Baghouse

EU003 Coke Silo - MH04 Baghouse

EU004 East Alumina Elevator - MH06 Baghouse

EU005 East Alumina U n loading - MH07 Baghouse

EU006 East Conv ey or S t orage - MH08 Baghouse

EU007 West Alumina U n loading - MH09 Baghouse

EU008 Anode Dust Con t rol S y s t em - MH03 Baghouse

EU009 Coke Unload ing - MH05 Baghouse

EU010 West Convey o r Storage - MH10 Baghouse

EU011 Potline Sweepin g - AR04 Baghouse

E U 0 1 2 T r e a t m e n t of Aluminum Crucibles (TAC) Oper ations - CO10 Baghouse

EU013 Pin Cleaning - West Plant - CR 07 Baghouse

EU014 Pin Cleaning - East Plan t – CR07a Baghouse

EU015 Paste Plan t Ex tr uder - PP01 Procedair Dr y C oke Scrubber (B aghouse)

EU016 Paste Plan t Mixer - PP02 Procedair Dr y C oke Scrubber (B aghouse)

EU017 Pinhole Past Dr y i ng - PP03 Baghouse

EU018 Pitch Stor age Tank Vents - PP04 None

EU019 Therminol Oil H eati ng S y s t em - PP05 None

EU020 East Plant Dr y S c rubber Alumin a Transfer (North ) - AR01 Baghouse

EU021 East Plant Dr y S c rubber Alumin a Transfer (South ) - AR02 Baghouse

EU022 West Plant Dr y Scrubber Alumina Tr ansfer (Nor th) - AR06 Baghouse

EU023 West Plant Dr y Scrubber Alumina Tr ansfer (Sou th) - AR07 Baghouse

EU024 Primar y Gas Collection S y stem - West Plant (Potlines 1 & 2) - AR05 Alcoa A398 Dr y Alum ina S c rub b er #1 (Reactor #1 & Baghouse)

EU025 Primar y Gas Collection S y stem - West Plant (Potlines 1 & 2) - AR05 Alcoa A398 Dr y Alum ina S c rub b er #2 (Reactor #2 & Baghouse)

EU026 Primar y Gas Collection S y stem - West Plant (Potlines 1 & 2) - AR05 Alcoa A398 Dr y Alum ina S c rub b er #3 (Reactor #3 & Baghouse)

EU027 Primar y Gas Collection S y stem - West Plant (Potlines 1 & 2) - AR05 Alcoa A398 Dr y Alum ina S c rub b er #4 (Reactor #4 & Baghouse)

EU028 Primar y Gas Collecti on S y stem - East Plant (Potlines 3

, 4

, & 5) - AR05 Alcoa A398 Dr y Alum ina S c rub b er #5 (Reactor #5 & Baghouse)

EU029 Primar y Gas Collecti on S y stem - East Plant (Potlines 3

, 4

, & 5) - AR05 Alcoa A398 Dr y Alum ina S c rub b er #6 (Reactor #6 & Baghouse)

EU030 Primar y Gas Collecti on S y stem - East Plant (Potlines 3

, 4

, & 5) - AR05 Alcoa A398 Dr y Alum ina S c rub b er #7 (Reactor #7 & Baghouse)

EU031 Primar y Gas Collecti on S y stem - East Plant (Potlines 3

, 4

, & 5) - AR05 Alcoa A398 Dr y Alum ina S c rub b er #8 (Reactor #8 & Baghouse)

EU032 Primar y Gas Collecti on S y stem - East Plant (Potlines 3

, 4

, & 5) - AR05 Alcoa A398 Dr y Alum ina S c rub b er #9 (Reactor #9 & Baghouse)

EU033 Primar y Gas Collecti on S y stem - East Plant (Potlines 3

, 4

, & 5) - AR05 Alcoa A398 Dr y Alumina Scrub b er #10 (Reactor #10 & Baghouse)

EU034 Potline #1 Roof Vent, West Plant - AR03 None

EU035 Potline #2 Roof Vent, West Plant - AR03 None

EU036 Potline #3 Roof Vent, East Plant - AR03 None

EU037 Potline #4 Roof Vent, East Plant - AR03 None

EU038 Potline #5 Roof Vent, East Plant - AR03 None

EU039 Casting Furnace #3 - CO01 None

EU040 Casting Furnace #4 - CO02 None

EU041 Casting Furnace #6 - CO03 None

EU042 Casting Furnace #7 - CO04 None

EU043 Casting Furnace #8 & #9 - CO05 None

OP2655- 01 7 Date o f Decisio n : 0 5 / 2 1 / 0 3

E ffective Date: 06/21/03EU044 Casting Pit #3 - CO06 None

EU045 Casting Pit #4 - CO06 None

EU046 Casting Pit #6 & #7 - CO06 None

EU047 Casting Pit #8 & #9 - CO06 None

EU048 Dross Handling - CO07 None

EU049 Sheet Ingo t Saw – CO08 Target Box and C y clone

EU050 T-Ingot Saw – C O 09 Target Box and C y clone

EU051 Sandblasting Activities - CR01 None

EU052 Lectromelt Furnace - CR03 Wet Scrubber

EU053 Rod Mill / Mater i al Storage - CR 04 Baghouse

EU054 Change House B o iler #1 - MP01 None

EU055 Change House B o iler #2 - MP02 None

EU056 Lab Bo iler #1 - MP07 None

EU057 Machine Shop B o iler #1 - MP08 None

EU058 Machine Shop B o iler #2 - MP09 None

EU059 Paste Plan t Boiler #1 - MP11 None

EU060 Paste Plan t Boiler #2 - MP12 None

EU061 Warehouse Boiler #1 - MP16 None

EU062 Warehouse Boiler #2 - MP17 None

EU063 Haul Road Emissions - MP05 None

EU064 Gasoline Stor ag e Tank - MP04 None

B. C a t e g o ric a ll y Insignific an t Emitting Units/Activities

Emission Unit ID De sc r i ption

IEU03 Collector B a r Sh otblasting - CR0 2

IEU04 Anode Debris Storage - CR05

IEU05 Anode Abrader
- CR06

IEU06 Shed 11 Pot R e b u ild / Masonr y Mixer - CR08

IEU07 Diesel Stor age Tanks - MP03

IEU09 Open Burning - MP10

IEU10 Plantsite Sani tar y Landf ill - MP1 3

IEU11 Propane Storag e - MP14

IEU12 W a s t e Oil Heat Recover y - M P 1 8

IEU13 M S DS Chem ical s / P l an twide Us age - M P 19

SECTION II I. PERMIT CONDITIONS

A. Emission Limits and Standards

The A l um inum MA CT allo w s CFA C to s e lec t pot li ne e m ission lim its, ap pl ica b le t o EU 024-EU 0 3 8

, base d

up on the fol l o w ing gu ide l i n es:

lb TF / To n A l prod uc ed lb PO M / To n A l prod uc ed Singl e Po tli ne (Singl e Po tli n e ) 2.6 * 3.6

Tw o-Potli ne A vg. (West Pl ant) 2.6 3.2
Three-Pot l i n e A vg. (Eas t Pla n t) 2.5 3.0
Five-Pot lin e A vg. (En tire Plan t) 2.4 2.9

Plant-Wi de E m ission Lim its for the a b ove sour ces are base d u p o n t h e to ns of al um inum produ ce d (TA P ).

At th is p o i n t i n t i m e , CFAC has in dic a te d tha t for TF t h e facil ity wil l c o m p ly with th e fiv e -po tli ne e m ission
lim it, and for POM they h a v e sel ect ed th e sing le-p otl i n e e m ission l i m i t

. CFAC m a y elec t t o sa tisfy an alter n at iv e sc h e m e ide n tifi e d by th e a b o v e tab l e (Ta b l e C of t h e MACT Quic k Ref e re nce G u id e (Appe nd ix
G )), and re qu e s t to c h an ge th eir IP to r e flec t t h eir new c h oic e of em ission lim its. IP cha nges m u st be
subm itted t o t h e De partm e nt for a ppro v a l prior t o i m ple m entati on.

OP2655- 01 8 Date o f Decisio n : 0 5 / 2 1 / 0 3

E ffective Date: 06/21/03On Ju ne 14

, 20 00 , CFAC fax e d a n o t i f i c ati o n to th e Depart m e n t th at they wo u l d li k e t o ch an ge from t h e si ng le
pot li ne e m ission lim it for POM, to t h e fi v e -pot li ne em is sion lim it, or 2.9 lb /TAP, fo r POM. CFAC will be require d to s u b m it an up da t e d IP, i n d i ca ti ng the i r n e w POM e m ission lim it select io n , for a ppro v al

, to th e D e partm e nt.

The IP (CFA C’s MA CT I m plem entati o n Pla n (A pp en dix F)), descri bed ab ov e, inc l ud es a test in g pla n tha t CFAC will be e m ploy in g t o dem onstrate c o m p lian ce wi t h t h e ab ove M A CT e m ission lim its, as well as t h e

em ission c o n t rol d e v i ce op e r atin g param e ters tha t are t o be m onitore d.

Perm it #26 55- 05 im poses th e fol l ow i ng ad dit i o n al em ission lim itati ons :

1. 2.6-l b TF / T A P singl e-po tl ine em ission li m it (as op pose d t o t h e 2. 7 M A CT sin g le-l i n e re qu irem ent);

2. 20% op ac ity li m it for the Prim ary Contr o l Sy stem (D ry A l u m ina Scru bbers), EU 0 2 4

- EU 033; th e potr oom /potl i n e ro of m onitors, EU03 4-E U 038, are s u b j ect t o a 10 % opa city lim it;
3. 0.0 2 gr/dscf re quirem e nt for EU 008 thr o u g h EU 01 4; an d
4. PO M em issions co ntr o ll ed f r o m EU 015 a nd EU 0 1 6 by a D r y Coke Scrub b er.

EU 024-EU 0 3 8 are ex pressl y excl ud ed fro m the Process Weig ht R u l e b y A R M 17 .8. 3 10(3)(a).

A ll rem a ining em ission uni ts (EU ’ s), at a m i nim u m , ar e sub j ec t t o Ge neral l y Appl ic abl e Re qu ire m ents: ARM
17. 8. 30 4, 17. 8

. 30 8, 17 .8. 3 0 9

, 1 7 .8 .3 10, 1 7

. 8 .3 22

, 1 7

. 8 .3 2 4 , 17. 8. 12 12, and 1 7 .8 .1 20 7

.

B. M o n i t o r i n g R e q u i r e m e n t s

A R M 1 7 .8 .1 2 12(1) re qu ires tha t a ll m onit o rin g a nd an al y s is proce dure s or tes t m e thods re qu ired u nder applic able re quirem ents are contai ne d i n o p erat in g p e rm its. I n a d d iti o n , whe n the a p pli cab le re qu ir e m ent d o es
not req u ire pe riodi c t e sti n g or m onit o rin g , peri od ic m onitorin g m u st be prescri b ed t h at is s u ffici en t to y i eld
relia ble da ta fr o m the re lev a nt tim e period tha t is represe n ta tiv e of th e source' s com p lia nce with t h e perm it.

The re qu irem ents f o r tes tin g, m onitori ng , record ke epi n g, re port i n g a nd com p lianc e cert i fica ti on sufficie n t to

assure c o m p liance

, d o es no t requ ire t h e pe rm it to im pose the sam e leve l of ri gor for a ll em ission un its.
Furtherm ore, it d o es no t req u ire ext e ns ive testi n g or m onitori ng t o assu re com p lianc e with th e a p p l i cab le requirem e nts for em ission u n its th at do n o t ha ve sig n ifi c ant po te nti a l t o v i o l at e em ission lim itati on s or o t her requirem e nts un der n o rm al opera ti ng co n d it io ns. W h e n c o m p lia nce w ith the u nder l y i ng ap pl ica b le requirem e nt f o r a i n si gn ific ant em ission u n it is not t h rea t en ed by la ck of reg u lar m onit o rin g a n d w h en per i o d ic
testi n g or m onitori ng is no t oth e rw ise req u ired by t h e a ppl ica b l e req u i rem e nt, t h e st atus qu o (i .e

. , no monitoring) will m eet the requ irem ents o f ARM 1 7 .8 .1 21 2(1). T h ere f ore, t h e perm it does n o t inc l ud e

m onitori ng fo r insi gn ifica n t e m ission uni ts

.

The perm it in clu d es peri od i c m onit o rin g or recor dke ep i ng for eac h ap pli cab le re qu ir em ent. T h e in form ation
obt ai ned from the m onitorin g a nd re cord k eep in g w i l l b e used by t h e p e rm ittee t o per i od ica lly c e rti f y

com p liance with th e em ission l i m its an d st and a rds. However, th e Dep a rt m e nt m a y re ques t a d d iti on al t e sti n g
to det e rm ine c o m p lian ce wi t h t h e e m ission lim its and s t a ndar d s.

EU001 – EU 007 Material Handling Emitting Units with Baghou ses (III.B)

EU 001 - Bal l Mil l N o rt h - MH 01 EU 005 - East A l u m ina U n l o adi ng - MH 07

EU 002 - Bal l Mil l Sou t h
- MH 02 EU 006 - East Con v ey or St o r age - MH 08

EU 003 - Co ke Silo - MH 04 EU 007 - W e st A l um ina U n l o ad in g - MH 0 9

EU 004 - East A l u m ina El ev ator - MH 06

EU001-EU007 are s u bject to the genera lly applicable r e quirem ents of III. A, as well as the ins p ection and

m a inten a nc e r e qu irem ents in t h e Po ll uti o n C ontr o l De v i ce I n spe c ti on & Mai n te na nc e Plan (Appe n d ix ), of th is

opera ti ng per m it. The p o te nti a l em ission s fro m these b a gh ous es are s u ch th at th ey do no t req u ire a freq u en t testi n g sch e d u l e; th erefore, t e stin g is sc hed u le d " a s re qui red" by t h e D e partm e nt.

OP2655- 01 9 Date o f Decisio n : 0 5 / 2 1 / 0 3

E ffective Date: 06/21/03The D e partm e nt has c onf ide n ce th at the m a teria l han d l i n g b a g h o u ses i d en tifi e d ab ov e are prov id in g g o o d

con t rol of part icu l at e a nd op acity em ission s w h en CFA C em ploy s a Po llu ti on Co ntro l D e vi ce I n spe c ti on &
Mai n te na nce Plan (I & M p l an) (A p p en di x K ) . O n e co m ponen t of th e I & M pl an i s a w e e k ly v i sual s u rvey to det e rm ine w h at t h e vis i bl e e m issions of t h e var i o u s em is sion units are. The I & M pl an a l so esta bl i s hes a
routi n e of sc h e du le d m a inte nan ce an d rec o rdk eep in g. In sum m a ry , th e D e partm e nt has d e t e rm ined t h at th e im plem entat i o n a nd co nti n u e d use of a ba gh ouse I & M pla n su bsta nt i a lly assur e s c o m p lianc e w i t h the o p ac ity
and par tic ula t e em ission lim its.

EU008 - EU014 Emitting Unit s with Baghouses & G r ain L oadin g Restrictions ( III.C)

EU 008 - A n o d e D u st C ontr o l Sy stem - M H 03 EU 012 - Treat m e nt of A l um inum Crucib le s - CO 10

EU 009 - Co ke U n lo adi n g - MH 05 EU 013 - P i n Clea ni ng - W e st Plan t - C R 0 7

EU 010 - W e st Co nvey o r St o r age - MH 10 EU 014 - P i n Clea ni ng - Ea st Plan t - C R 0 7 a EU 011 - P o tl i n e Sw ee pin g A R 04

EU 008-EU 0 1 4 are s u b j ec t t o a 0. 02 gr/ds c f requ irem ent (Per m it #2 65 5-05), as w e l l as th e g e n e rall y appl ic abl e requirem e nts of III.A. These m a terial handling bagh ouses are subject to the I & M r e quirem ents of Appendix
K. The p o te nt ial em issions fro m these bag h o u ses are suc h t h at th ey d o not req u ire a f r eque nt tes tin g sch e d u l e to dem onstrat e com p lian ce with the i r em i ssion lim its; t h er efore, t h e t e sting fre que ncy is "as requi r ed" by t h e D e partm e nt. The D e partm e nt has det e rm ined th at th e m a teria l han d l i n g b a g h o u ses i d en tifi e d ab ov e are

prov id in g g o o d c ontr o l of p a rtic ula t e an d opa city em issions w h en CFA C em ploy s a ba gh ouse I & M p l a n , a n d
tha t im ple m entati on of an I & M p l a n su b s tant ia lly assu res com p lianc e with t hose li m its.

EU015 - EU019 Paste Plant Emitti ng Units with Baghouses (III.D)

EU 015 - Pas t e Plan t Ex tru d e r - PP01 EU 016 - Pas t e Plan t M i xer - PP02

EU 017 - P i n h o le Pas t e D r y i ng - PP0 3

The Past e Pla n t E x tru d er (E U 015) a n d t h e Paste Pl ant M i xer (EU 0 16) are pro v i d e d e m ission c ontr o l by th e Paste Pla n t Dr y Coke Scrub b er, wh ich rep l ace d a wet s c rubb in g sy ste m as part of th e faci lity ' s effort t o c o m p ly

w ith the A l um inum MA CT. The MA CT a nd prec onstr u c ti on perm it requ ires t h a t t h e co ke s c rub b e r op erate

w h ene v er t h e Paste Pla n t is opera ti ng, an d tha t opera ti ng param e ters are m onit o red a nd lo gge d on a da ily b a sis.

A s require d b y the D e partm e nt, CFA C sh all perform a sem i annu al Me tho d 9 t e st to dem onstrate c o m p lian ce with the o p ac i t y lim itatio n o n t h e dry co ke scrub b er.

If the dry coke scrubber operating param e ters (as defi ne d in the CFAC MACT IP) are exc e e d ed, CF AC m u st ini tia te correc t ive ac tio ns. Si m ilarly

, a dai l y visu al s u rve y m u st be p e rform ed on th e e m issions fro m the scrubber stack, and excessive em issions ar e to be logged and corrective ac tions initiated. 40 CFR 63.848 (f)
- (i) requires that CFAC m onitor and rec o rd opera ting pa ra m e ter exce e d ances , and t h at t h e s e ve nt h exce edanc e duri ng a sem i ann u a l p e rio d (plus eac h a d d iti ona l e x c eed ance aft e r the seve nth, but only one exc e e d ance for

any gi ve n 24- ho ur peri od) s h al l b e rep o rte d as a v i o l at io n.

EU018 - Pitch Storage Tanks - PP04 (I II.E) & EU019 - Therminol Oil Heatin g System - PP05 (III.F)

EU 018 an d E U 019 are su bj ect to th e g e n e rally ap pl ica b l e req u irem ents of t h is opera tin g perm it, sp ecific a l l y ARM 17 .8.304 (1 ) & (2 ). Th e o p a cit y l i m i t a ti on fo r t h e co nd en sati on to wer (v ent ) on th e p i tch st orag e t a nk s (EU 018) is 20 %, w h i l e the o p ac ity lim itati on on th e T h e r m i nol O il H e ati ng Sy stem (EU 019) is 4 0 % . N e w Pitch stora g e t a nks ha ve ad d iti ona l re qu ire m ents im pos ed by t h e A l um inum MA CT, w h ich th is e x i tin g pit c h
storag e t a n k is no t su bj ect to . Sim ilarly

, th e Th erm i nol O il H eat in g S y stem is not a ddresse d by th e MA CT, n o r
are t h ere a n y app lic ab le re q u irem ents, ot h e r th an ge nera lly ap pl ica b le requirem e nts, tha t t h is e m ission u n it is subj ect to. It i s unlikely t h at eit h er of t h es e units will exceed t h eir opa c ity l i m itati ons; therefore, a n nual
certifi cat ion a nd sem i annual report i ng ar e ade qua te to de m onstrate co m p lianc e.

OP2655- 01 10 Date o f Decisio n : 0 5 / 2 1 / 0 3

E ffective Date: 06/21/03EU 020 - EU 0 23 Pri m ar y Scrubber System Alumina Transfer Emitting Units (I II.G)

EU 020 - East Plant D r y Scrub b er A l um ina Transfer (North) - AR01 EU 022 - W e st Plan t D r y Scrub b er A l um ina Transfer (North) - AR06

EU 021 - East Plant D r y Scrub b er A l um ina Transfer (South) - A R 0 2 EU 023 - W e st Plan t D r y Scrub b er A l um ina Transfer (South) - A R 0 7

The prim ary scrub b in g sy ste m alu m ina tra n sfer ba gh ous es above are subj ect t o t h e genera lly a ppl i cable requirem e nts: A R M 1 7 .8 .3 0 4 (2), 2 0 % op a c ity , a n d A R M 1 7 .8 .3 10, p a rtic ula t e m a tter, bas e d up on proc ess

w e igh t

. The c a pac ity of th es e ba gh ous es is such t h at thei r pot entia l em issions are bel o w the t h reshold t h at

w oul d req u ire perio d i c t e sti n g; theref ore, t h e c o m p lian c e dem onstrati o n w i l l b e t e sti ng as req u ire d by th e D e partm e nt. H o w e ver, the D e partm e nt is also req u iri n g tha t t h es e em ission un its be subj ect to a ba gh ouse I & M p l an . T h e I & M pla n (A ppe nd ix K ) provi des assura nce that thes e baghouses operate at their m a xi m u m effecti v e n ess.

EU024 - EU033 Primary Ga s Collection System Emitting Units (III.H)

EU 025 - Prim ary G a s Coll e c ti on Sy stem - West Pla n t - Scrubb er # 1
- A R 05 EU 030 - Prim ary G a s Coll e c ti on Sy stem - East Pl ant - Scrubb er # 6
- A R 05

EU 026 - Prim ary G a s Coll e c ti on Sy stem - West Pla n t - Scrubb er # 2
- A R 05 EU 031 - Prim ary G a s Coll e c ti on Sy stem - East Pl ant - Scrubb er # 7
- A R 05

EU 027 - Prim ary G a s Coll e c ti on Sy stem - West Pla n t - Scrubb er # 3
- A R 05 EU 032 - Prim ary G a s Coll e c ti on Sy stem - East Pl ant - Scrubb er # 8
- A R 05

EU 028 - Prim ary G a s Coll e c ti on Sy stem - West Pla n t - Scrubb er # 4
- A R 05 EU 033 - Prim ary G a s Coll e c ti on Sy stem - East Pl ant - Scrubb er # 9
- A R 05

EU 029 - Prim ary G a s Coll e c ti on Sy stem - East Pl ant - Scrubb er # 5
- A R 05 EU 034 - Prim ary G a s Coll e c ti on Sy stem - East Pl ant - Scrubb er # 10 - A R 05

EU 024-EU 0 3 3 , t h e te n A l c o a A 3 98 dry a l um ina scrub b e rs tha t c o m p rise t h e prim ary contr o l sy ste m , are subj ect to t h e requirem e nts of 40 CFR Par t 6 3 , Su bp art LL (A lum i num MA CT), as w e ll as r e q u ir em ents im posed by C F A C ' s precon s truct i o n p e rm it (A RM 17 .8. 3 1 5 ). T h e pri m ary poll u t a n t s for t h ese e m ission u n its
tha t are addres sed by the al um inu m MA CT an d CFA C ' s prec onstr uct i on perm it are Tota l Fl uori d e (TF) and Polycyclic Organic Mat t er ( P OM). The pri m ary control syste m effecti v ely c a ptures an d p r ocesses t h e fl uo ri de

gases evolving from each re duc ti on cel l (pot). Mos t of t h e POM em issions evol ve f r o m the a n ode

, and a n ode
relate d act iv iti es; t h erefore

, m o st POM em issio n s are pre dom inantly fu git i ve i n n a t u re an d ar e n o t c a pt ured by
the prim ary control system

.

The alu m inu m MACT p r ovides a m echanism for C F AC to average the e m i ssions from thei r potlines, which provides m o re operational flexibility to the facility. Ho wever, with eac h e m i ssion ave r aging scenari o , whether averaging the two lines of the West plant, th e three lines of the East Plant, or all five line s fo r the entire plant, each averaging scenario i m p o ses a succe ssi vely m o re re st rictive e m ission li m it for bot h TF and POM. The rules
for e m ission averaging are described in Su bpart LL, and CFAC wa s req u ired to sub m i t an IP describ i ng how
CFAC would satisfy the req u ire m ents o f t h e MACT (Ap p endix F of this operating perm it ) befo re the facility wa s

perm itted to a v erage their e m i ssions. CFAC ' s M A CT IP wa s reviewe d by the Depa rt m e nt and the US EPA, and
underwent sev e ral revisions. The current IP version st ates that the facility was not going to average POM

e m i ssions at th e current ti m e ; however, the y elected to average the TF e m i ssions for all five potlines.

ARM 1 7 .8 .3 1 0 (a) spe c ific al ly exc l u d es th e ap pl ica t i on of th e pr ocess weigh t ru le to the part ic ula t e m a tter

e m itted from the re duc ti on c e lls of a prim a r y alum inu m redu cti o n p l an t

. Th erefore, e x cl ud in g o p a c ity , t h e

e m ission l i m i t (Tabl e C, Ap pen d i x G) spe c ifies th e TF a nd POM e m ission lim its nec e ssary for CFAC to satisfy bo th th e MACT re qu ire m ents for V SS2 cate gor y facil iti es a nd t h eir exis ti ng p r econs truc tio n perm it requirem e nts. If CFAC dem onstra t es com p li anc e wit h t h e l i m its speci fied by Tab l e C, t h e n t h ey will ha ve satisfie d bot h the op erat in g perm it an d t h e prec onstr uc t i on perm it li m its. T h e prim a r y contro l sy st e m is subj ect to a 20 % op ac ity lim itat i o n , an d C F AC m u st perform daily vis u al s u rvey s fo r opa city

. Si m ilarly

,

OP2655- 01 11 Date o f Decisio n : 0 5 / 2 1 / 0 3

E ffective Date: 06/21/03CFA C m u st m oni tor the o p e r atin g param e ters of t h e pri m ary contr o l s y stem , and if param e ter exc eeda n c e s

occ u r, t a ke c o rrectiv e a c ti on as pres cribe d in the i r St art u

p, Sh ut dow n, and Ma lfun ct i on Pl an (SSM ), w h ic h is Appen d i x H o f this op erat in g p e rm it.

To de m onst r at e co m p liance with the Table C e m ission li m i t s fo r TF an d POM, C F AC m u st deter m ine the

e m i ssions from each potline roof (sa m plin g fro m the Me thod 14 Manifold sy ste m s) a nd fro m the p r i m a r y

control
syste m (dry al u m ina scrubbe rs), and calculate the total em i ssions fro m each potline for both pollutan t s. The pri m ary cont rol system (their are two at CFAC: West Plan t and East Plant) m u st be tested once annu ally fo r both TF and POM; CFAC will use the test resul t s to m a inta in a 12-m onth rol ling average of TF e m issions fro m the pri m ary cont rol system , and a quarterl y average POM e m is sion. Testing t h e secondary em i ssions, tho s e em i ssions exiting fro m t h e potroo m ro ofs, is performed with a m u ch higher frequ ency ; a m i ni mu m o f three ru ns per m onth for
TF and one ru n per m onth fo r POM fro m the Method 14 m a ni fold sy stem s. An i m portant distinction between TF
and POM e m i ssions is the averaging periods; TF i s a m o nthly average, while POM is a quarterl y ave r age.

D e tails of t h e opera ti ng per m it and MA C T test in g a n d report i n g re qu i r em ents are l e ngt hy , a nd th e op erati n g

perm it spe c ifi e s what those requirem e nts are. T h e quar t e rly report i n g prov ide d to th e D e partm e nt by CFA C
will a l l o w th e facil ity an d th e Departm e nt to det e rm ine CFAC ' s co m p lia nce with an y of the TF a n d POM

em ission l i m i ts defi ned by T a bl e C. A l so, on a q u art e rly basis, CFA C m u st report th eir c o m p lia nc e sta t us w i th
the perm it and MACT req u ir e m ents, i n cl ud ing t h e num ber of op erat in g param e ter exc eeda n c e s.

EU034 - EU038 Potline Roof Ve nt Emitting Units (III.I)

EU 034 - P o tl i n e #1 Ro of V e nt-West Pla n t - A R 0 3 EU 037 - P o tl i n e #4 Ro of V e nt- E a st Pl ant - A R 03

EU 035 - P o tl i n e #2 Ro of V e nt-West Pla n t - A R 0 3 EU 038 - P o tl i n e #5 Ro of V e nt- E a st Pl ant - A R 03

EU 036 - P o tl i n e #3 Ro of V e nt- E a st Pl ant - A R 03

The po tli ne r o of m onit o rs (roof v e n t s) are subj ect to t h e requirem e nts of 40 CFR Par t 6 3 , Su bp art LL (Alu m i nu m MACT), as well as t h e re quire m ents of CFA C ' s preconstru c ti on perm it (A RM 1 7 .8 .3 1 5 ). Si nce the MACT em ission l i m its for TF and POM apply to (a r e im posed u p o n ) al l em issions fro m the re duc ti on cel ls
tha t c o m p rise the po tl ines , t h e t o t a l em issions from alu m inum produ cti on at CFA C m u st be det e rm ined from
bot h the prim ary contro l sy st em and from the pot li ne r o o f s.

CFA C inst all e d a n EPA ap p r ove d m a nifol d sy stem (Metho d 1 4 M a n i folds) for eac h of th eir fi ve p o tl ines . T h e

m a nifolds are int e n d ed t o dr aw a repres en t a ti ve sam p le o f potr oom fugitiv e em issions (seco ndary e m issions)
fro m the p o tl i n e ro of m onitors dow n t o a n ac cessi ble s a m p ling l o ca ti on. Th e M e t h od 14 d u ct has tw o

sa m p ling port s at 90° from each other, si m ilar to t h e port c onfi gura t i on on any e x haust s t ac k. As with the prim ary contr o l sy stem , the s e m a nifol d d u cts m u st be s a m p led for bo th TF an d PO M em issions.

As with t h e pr i m ary control syste m at CFAC, ARM 17

. 8 .310(a) s p ec i f ical ly ex c l u d e s ap pl ica t i on of th e

p r o cess wei ght ru le to determi n e a part icul at e m a t t e r e m issio n l i m it fo r the part ic ula t e em issions fro m of the
pot li ne ro ofs. The po tli ne r o ofs are su bj ect to a 1 0 % op a c ity l i m itati on , an d CFA C m u st perform da ily vis u a l

survey s, as w e ll as q u arterly Met h o d 9 tes t s, as d e scri bed by th e pr oce d ure pr op osed by CFA C in A ppen d i x J
of th e o p era t i n g p e rm it (O P265 5-00).

CFA C ini tia ll y propos ed to perform Meth od 9 t e sts on p o tro o m s 1 an d 10 , su gg esti n g t h at th ose t w o po tro o m s

are represe n t a tive of the We st and E a st Pl ants, t o d e m onstrat e c o m p liance wit h t h e 10% op ac ity li m it. However, in o r der for CFAC to d e m onstrate th at po troo m s 1 and 10 a r e represe n ta ti ve of th e e n t i re faci lity

, they w o uld fir s t ha ve be en r e qu ired to de m onstrate th a t all potroom s are operat ed e x ac tly al ike, without sign ifica n t o p e rati on de via t i ons. CFA C w oul d hav e do n e th is by m oni torin g op erati ona l p a ram e ters of th e pot li nes. CF A C has, alt e rn ati v ely

, pro p o s ed a pro ced ur e (Appe nd ix J ) to det e rm ine the o p ac ity fro m at le ast a porti o n of eac h of the fiv e p o tl ines

.

OP2655- 01 12 Date o f Decisio n : 0 5 / 2 1 / 0 3

E ffective Date: 06/21/03The e m ission lim it tabl e (Ta b le C, Ap pe nd ix G) spe c ifi e s the TF a nd P O M e m ission lim its necessa ry for
CFAC to sa tis fy both t h e M A CT requ ire m ents for VSS2 cat egory facili ti es, a n d thei r e x ist i n g pr eco nstru c ti on

perm it req u ire m ents. If CFAC dem onstrates c o m p lianc e w ith t h e lim i t s spe c ifie d by Tab l e C

, t h e n they wi ll
hav e sa tisfie d bot h the o p era tin g perm it an d t h e prec onst r ucti on perm it lim its.

To dem onstrate com p liance with the Ta ble C em ission l i m its for TF an d POM, CFA C m u st cal cu l a te th e t o ta l

e m issions from each pot l i n e for bot h pol l u ta nts. As sta t ed pre v iously

, test ing the se condary em issions that exit
fro m the p o tl i n e ro ofs is per f orm e d w ith m o re frequen c y than for t h e prim ary sy stem s; a m i nim u m of three

runs p e r m onth for TF a n d o n e ru n per m o nth for PO M f r o m the M e th od 14 m a nifol d sy stem s. Agai n, an im portan t d i st inc tio n betw e e n TF a n d PO M em issions i s th e averaging periods; TF is a m onthly a v erage, while
POM is a quar t erly average. The test resu l t s fro m all v a l i d test r uns m u st be used to det e rm ine co m p lianc e with the em ission lim its.

D e tails of t h e opera ti ng per m it and MA C T test in g a n d report i n g re qu i r em ents are l e ngt hy , a nd th e op erati n g

perm it spe c ifi e s what those requirem e nts are. T h e quar t e rly report i n g prov ide d to th e D e partm e nt by CFA C
will a l l o w th e facil ity an d th e Departm e nt to det e rm ine CFAC ' s co m p lia nce with an y of the TF a n d POM

em ission l i m i ts defi ned by T a bl e C. A l so, on a q u art e rly basis, CFA C m u st report th eir c o m p lia nc e sta t us w i th
the perm it and MACT req u ir e m ents, i n cl ud ing t h e num ber of op erat in g param e ter exc eeda n c e s.

EU039 - EU043 Castin g Furna ce Emitting Units (III.J)

EU 039 - Cast i ng Fur n ac e # 3 - CO 01 EU 042 - Cast i ng Fur n ac e # 7 - CO 04

EU 040 - Cast i ng Fur n ac e # 4 - CO 02 EU 043 - Cast i ng Fur n ac e # 8 & #9 - CO 0 5

EU 041 - Cast i ng Fur n ac e # 6 - CO 03

The natural gas-fired ca sting furnaces at C F AC are only subj ect to generally applicable require m e nt s. Therefo r e, the co m p liance dem onst r atio n required by t h is perm it fo r t h e opacity, particulate m a tte r fro m fuel co mbustion,
and sulfur in fuel requirem e nts, for thei r n a tural gas boilers shall consist of burning o n ly natural gas or LPG. This does not preclude the Depart m e nt fro m init iating an enforcem ent action if a Reference Method test indicates one
of the li m its i s being violated. The co m p liance date for th e Secondary Alu m inu m M A CT is March 2 4 , 2003.
CFAC' s operat i ng perm it does not currentl y addre ss the requirem e nts of the Secondary MACT.

EU044 - EU048 Castin g Pit Emitting U n its (III.K)

EU 044 - Cast i ng Pi t # 3 - CO 06 EU 047 - Cast i ng Pi t # 8 & # 9 - CO 0 6

EU 045 - Cast i ng Pi t # 4 - CO 06 EU 048 – D r os s H a ndl in g - CO 07

EU 046 - Cast i ng Pi t # 6 & # 7 - CO 0 6

All cas tin g is con d u c te d in d oors, a n d t h e c a stin g pi ts ar e subj ect to t h e gen e rally ap pl ica b le req u ire m ents of

A R M 1 7 .8 .3 0 4 (1) a nd 31 0. A Met h o d 9 t e st sh all be p e rform ed, as require d, to de te rm ine com p liance w i th th e 40% op ac ity li m it. However

, be caus e a ll c a stin g act iv iti es are c o n d u c t e d i n d oors, M e th od 9 test in g wil l foc u s

on the v i sib l e em issions e x i t i ng fro m ope n i ngs , v e n t s, or stac ks of th e casti ng b u il di ng(s). D e m onstrati ng

com p liance with th e o p a c ity requ irem ents shall b e i n d i ca tiv e of " n orm a l o p erat io ns,” and als o b e i n dic a ti ve of

com p liance with th e p a rti c u l ate m a tter em i ssion lim it. T h e c o m p lianc e dat e for the Seco ndary Alu m inu m MA CT is Mar c h 24, 2 0 0 3

. CFA C ' s opera tin g perm it do es no t c u rren t l y address the requ irem ents o f the Secondary M A CT.

EU049 - EU050 Aluminum Saw Emitting Units (III.L)

EU 049
– She e t In go t Saw - CO 08 EU 050 – T- I n g o t Saw - C O 09

EU049-EU050 are s u bject to the genera lly applicable r e quirem ents of III.A, specifically, ARM 17.8.304(2)
and 3 10. Th e pot en tia l em issions from the s e saw s are s u ch t h a t t h ey d o n o t re qu ire a freque nt test i ng sc he du le;
therefor e, t e sti ng is sc hed u l e d as re qu ired by the D e p a rt m e nt.

OP2655- 01 13 Date o f Decisio n : 0 5 / 2 1 / 0 3

E ffective Date: 06/21/03Both of the alum inu m saws above have an a l u m inu m chip control and recovery system that is interlocked with the operation of the saws. The system referred to, for bot h saws, has a d e vice that acts as a target box , plus a fan and cyclone. Also, each sa w has a "bailer" device to form the alu m inum chips into a size and shape suitable for
introduction b ack into a furn ace. The sy ste m s a r e si m ila r, however the c y clone of EU0 49 vents to atm o sphere,
while EU050 vents indoors. The T-Ingot saw control system al so has an alternate operational configuration that
allows a filter m e diu m to be placed between the cy clone and target box, which is an in tegral part of t h e target box. When this sy ste m is in t h e "filte r" confi guration, it bypasses the c y cl one, but still vents indoors.

Beca use the al u m inum saw s can no t ru n w i t h o u t the i r c ont rol a nd r eco ve ry sy stem s also run n i n g , a n d bo th s a w s are als o opera t e d w i t h i n bu il din g s, part icu l ate em issions fro m the al um inum saw s (alu m i num chips an d d u st)
are effect ively controlle d. Partic ula t e em i ssions from materia l handl i ng cy cl ones are very co nsist e nt, an d t h e Departm e nt is co nfid ent t h at test in g as re q u ired is s u ffici ent to dem onstrate co nti n ue d c o m p lia nce with opa ci ty and par tic ula t e lim its.

EU051 – S a ndblasting Activities - CR01 (III.M)

The sa ndbl asti ng act iviti es a r e assoc i at ed with m a intena nce w o rk bei n g p e rform ed, and is c o n d u c t e d out do ors. As such, these act iviti es are subj ect to a 20 % op ac ity lim itat i o n

. CFAC sha ll co nd u c t a week ly su rvey of
visi ble em issions from sandblast i n g a c t i vi ties an d, if ex c e ssive fug iti ve em issions are ide n t i fie d by the vis u al survey, CFAC m u st ini t i a te efforts to m i nim i ze or cur t a i l the em issions. A l so, as re q u ired by t h e D e partm e nt, CFAC shal l p e rform a Meth od 9 t e st. CF AC is n o t re q u ired t o p e rform m onitoring or test in g t o d e m onstrate

com p liance with th e p a rti c u l ate m a tter em i ssion lim it.

EU052 – Lect romelt Furnace Emitting Unit - CR03 (III.N)

The L ectr o m e lt Furn ace is c u rrent ly co ntr o ll ed by a w e t scrub b er; ho w e ver, CFA C has rec e n tly (June 7, 2 0 0 0 )

prov ide d a d e m i nim i s notifi cati o n i ndi cat i ng tha t t h e scr u b b er is be in g repl ace d by a 13, 00 0-A C FM ba gh o u se with a n estim a t ed ex ha ust grain lo ad in g of 0.0 2 gr/dscf. The ba gh ouse will be s ubj ect to ge neral l y a ppl ica b l e requirem e nts, as well as t h e Pollu ti on Co n t rol De vic e In spect io n & M a in ten a n ce Pl a n (I&M Pla n ) (Appen d i x K ) . The po te n tial em issions fro m this ba gh ouse are s u ch tha t i t d o es no t req u ire a fre que nt test in g s c he du le,
therefor e t e sti ng is sc hed u l e d as re qu ired by the D e p a rt m e nt.

The D e partm e nt has c onf ide n ce th at the b a gh ouse id en tif ied ab ov e w i l l prov id e g o o d con t rol of part icu l at e a nd

opa city em issions w h en CFA C em ploy s a ba gh ouse I & M p l a n (A pp end i x K )

. O n e com pone nt of th e I & M pla n is a w e e k ly visu al s u rve y . The I & M pla n a l so esta blis hes a rou t i n e of sch e d u le d m a intena nc e an d
record kee p i n g

. In s u mm ary , the D e p a rtm e nt has det e rm ined th at th e i m plem entati o n a nd co nti n u e d use of a bag h o u se I & M p l an su bsta nti a lly ass u res com p lianc e w ith th e o p a c ity an d p a rtic ul at e em ission lim its.

EU053 – R o d Mill/Mater ial Storage Emitting Unit - CR04 (III.O)

The R o d M ill Bui l di ng (th i s bui ld in g form erly ho used a rod m ill) is n o w used f o r m a teria l st orage , and th e bag h o u se is us ed t o co ntro l e m issions ge ne rated as a resu lt of m a terial han d l i n g . T h e po ten t i a l em issions from
this ba gh ouse are suc h tha t i t d o es no t req u ire a freq u en t test in g sc hed u le, t h erefore testi n g is sc he dul ed as require d by th e D e partm e nt.

The D e partm e nt has c onf ide n ce th at a m a terial ha nd li ng bag h o u se is pr ovi di ng g o o d con t rol of part icu l at e a nd

opa city em issions w h en CFA C em ploy s a ba gh ouse I & M p l a n

. O n e com ponen t of an I & M pla n is a weekly visual survey t o dete rm ine what the vis i ble e m issions are from the em ission uni t. The I & M plan als o estab lis hes a rout in e of s c he dul ed m a inte n a nce p l us re co rdkee p i n g

. In su m m ary , the D e partm e nt h a s det e rm ined th at t h e im plem ent a ti on an d c ont in ue d us e o f a ba gh ous e I & M pla n su b s tant ia lly assu res

com p liance with th e o p a c ity an d p a rtic ul at e em ission lim its.

OP2655- 01 14 Date o f Decisio n : 0 5 / 2 1 / 0 3

E ffective Date: 06/21/03EU054 – EU062 Natural Gas Bo iler Emitting Units (III.P)

EU 054 - Ch an ge H o use B o i l e r #1 - MP0 1 EU 059 - Pas t e Plan t B o il er # 1 - MP1 1

EU 055 - Ch an ge H o use B o i l e r #2 - MP0 2 EU 060 - Pas t e Plan t B o il er # 2 - MP1 2

EU 056 - Lab Boi l er # 1 - M P 07 EU 061 - W a re ho use B o i l er # 1 - MP1 6

EU 057 - Ma c h in e Sh op Bo i l er # 1 - MP 08 EU 062 - W a re ho use B o i l er # 2 - MP1 7

EU 058 - Ma c h in e Sh op Bo i l er # 2 - MP 09

The D e partm e nt det e rm ined tha t n a t u ral ga s com bustio n i s sufficie n t to dem onstrate c o m p lian ce w i t h t h e

opa city

, part ic ula t e m a tter, a nd s u lfur in f u el l i m its for th ese em ission u n its. T h e a g e or ca pac ity of these u n its is such that NSPS requirements are not applicable. This com p liance de m onstratio n does not preclude the Departm e nt fro m init iat i n g a n e n forcem ent act io n if test i ng in dic a tes th at a n em ission lim it is ex cee ded

.

EU063 – Tru c k and Equipment Fugitive Emiss i ons / Haul Road Emissions – M P 05 (III.Q)

CFAC m u st p e rfo rm Metho d 9 tests, as required, to m o n itor opacity du e to truck and equip m ent acti v ity . CFAC

m

u st also exercise rea s onable precautions such as road maintenance, treat m e nt with water or dust su ppressant, and reduced truck and equip m ent speeds to control or m i t i gate em i ssion s. The Depart m e nt determ in ed that Method 9 testing, plus exercising reasonabl e precautions

, will assure co m p liance with the opacity lim it.

EU064 – G a s o line Storage (Tank) Emitting Unit – M P 04 (III.R)

The capaci ty of this st orag e tank is suc h t h at the only re quirem e nts it i s subj ect t o ar e opac ity (ARM
17. 8. 30 4(2)), and use of a s ubm erged fill pip e (or inst ea d of a su bm erged fill p i pe , i n stal la tio n an d use of a

vap o r l o ss c o n t rol de vic e (A RM 1 7

. 8 .1 06) ). The D e par t m e nt de term in ed t h a t a dem onstra t i on of c o m p lian ce shall be a Me t h od 9 tes t as r e quired.

C.

D

.

E. Test Methods and Procedures

The op erati n g perm it m a y not req u ire test in g for a ll s ourc e s if ro uti n e m oni tori ng is us ed t o det e rm ine

com p liance

, b u t the Depart m e nt has th e a u th ority to re q u ire test in g if deem ed nec e s s ary to d e term ine

com p liance with an em ission l i m it or st an dard. In ad dit i on, t h e perm i ttee m a y elect to voluntari l y conduct

com p liance te stin g t o c onf irm its com p liance s t at us.

R e c o r d k e e p i n g Requirem e n t s

The perm ittee is req u ire d t o kee p a ll re cor d s lis te d i n t h e op erati n g per m it as a p e rm ane n t bus iness record for a t least 5 y ears f o ll ow in g t h e d a te of t h e ge n e rati on of t h e record.

R e p o r t i n g Re q u i r e m e n t s

Reporti ng re quirem ents are inc l uded i n t h e perm it fo r e ach em ission uni t, an d Sec t i on V of t h e op erati ng

perm it, " G ene r al Co nd it io ns ," exp l ai ns the report i n g re q u irem ents. However, th e p e rm ittee is req u ired t o subm it sem i -ann ual an d a n n u al m onit o rin g rep o rts t o th e D e partm e nt and to a n n u al l y certify com p lia nce w ith
the appl ica b le requirem e nts contai ne d i n t h e perm it. The reports m u st inc l ude a l i st of al l em ission l i m it and

m onitori ng de via tio ns, th e r easo n for a n y dev i at io n, an d the c o rrecti v e act io n t a ke n a s a resu lt of a n y devi at io n.

F. Proposed P e rmit Comments



### The Department did n o t re ceive any co mments for proposed permit #OP265 5-0 1

.

OP2655- 01 15 Date o f Decisio n : 0 5 / 2 1 / 0 3

E ffective Date: 06/21/03SECTION I V

. FUTURE PERMIT CONS IDERATION S

A

.

B

.

C

.

D

. M A C T Sta n d a r d s

CFA C is su bj ect to th e req u i rem e nts of 40 CFR Part 63, Subp art LL, p r o m ulgat e d on O c to ber 7

, 1 9 97. CFA C
also s u b j ec t t o the Nati on al Em ission Sta n dards fo r Hazardous Air Pollutants for Sec o n d ary A l um inum
Produc ti on, 6 5 FR 1 5 6 8 9

, e ffectiv e M a rc h 2 3

, 20 00

.

N E S H A P Sta n d a r d s

As of the d a te of issua n c e of this perm it, th e o n ly NES HAP stand a rd t h at th is fac ili t y is sub j ec t t o is 4 0 CFR Part 61, Subpart M, "National Em ission St andard s for H azardous Air Polluta nts for De m o lition a n d

Ren ova ti on ;” this s t a ndar d i s app l i cab le to any as best os proje c t. T h e D e partm e nt is un aw are of a n y future requirem e nt t h at m a y be pr o m ulgat e d d

u ring t h e perm it term for w h ich t h is fa cil ity m u st com p ly

.

N S P S Standa r d s

CFA C w a s co nstruc te d pri o r to prom ulgat i on of 40 CF R Part 60, Subpart S, Stan dards of Performance for
Pri m ar y Alu m inum Reduction Plan ts; ther efore, no NSPS Standard s ar e currently applicable.

R i sk Manage ment Plan

As of Marc h 1 2

, 20 03, th is f acil ity d o es no t ex cee d the m i nim u m threshold q

u an ti ties for any reg u l a ted
subst a nc e l i ste d i n 4 0 CFR 6 8 .1 15 for a n y facil ity pro ces s. Co nse q u e n tly , t h is fa cil i t y is no t req u ir ed t o s ubm it
a Ris k M a na g e m e nt Pla n

.

Withi n 3 y ear s after t h e da t e o n w h i c h a r e gu lat e d subs t a nce is first lis ted un der 40 CFR 68 .1 30

, or th e d a te o n which a re gu l a te d su bsta nce is first presen t i n m o re than a thr e sho l d q

u a nt ity , CFAC m u st com p ly with the requirem e nts of 40 CFR 68.

SECTION V. 

### Other P e r m i t Considerat i on

CFA C filed a n a ppe al to th e Bo ard of En viro nm ental o f Revi ew o n J une 1 5

, 20 01. The ap pea l w a s bas e d on

com m e nts on A ppen d i x I of the p e rm it, w h ic h c o n t ai ns t h e C o m p lianc e Sche du le. T h e BE R m a de a fin a l
rulin g on N o v e m b er 16, 2 0 0 1

, by issui n g a Stip ula t i on an d O r der t h a t i n cl ud ed m i nor cha n g e s t o Pe rm it
O P 2655- 00. The perm it w a s issue d effec t ive on N o v e m b er 1 6

, 20 01

, w ith the m i no r cha nges i n cl ude d. Th e
current Ti tle V O p erati ng P e rm it #O P265 5-01 in cl udes these c h an ges.

OP2655- 01 16 Date o f Decisio n : 0 5 / 2 1 / 0 3

E ffective Date: 06/21/03

### STATE OF MONTA NA Depart ment of Environm en tal Quality Helena, Montana 59620

AIR QUALITY OPERATING PERMIT NUMBER OP2655-01

Minor Modification Application Receive d: August 29 , 200 2
Additional S ubm ittals: October 1, 200 2 Proposed Issue Date: March 12, 2 003
End of EPA 45-da y Review: April 26, 2003
Date of Decision: Ma y 21
, 2003
Effective Dat e : June 21, 2 003 Expiration D a te: Novem b er 16, 200 6
AFS Nu m b er: 030- 029-0 0 1 2

In accordance with Sections 75-2- 217 and 218, MCA, and Adm i nist rative Rules of Monta n a (ARM), ARM Title 17, Chapter 8, Subchapter 12 , Operating Perm it Program

, ARM 17.8.1201, et seq

.,

Columbia Falls Aluminu m Company, LLC
2000 Alum inum Drive Columbia Falls, MT 59912

hereinafter re ferred to as “ C FAC,” is au thorized to operate a st ationary source of air conta m ina n ts consisting of the em issions units described in this pe rmit. Until this per m it expires or is m odified or revoked, CFAC is allowed to discharge air pollutant s in accordance with the conditions of this per m it. All conditions in this permit are federall y and state enforceable unless otherwise specified. Requirem e nts, which are only state enforceable are iden tified in the per m it. A copy of this permit m u st be kept on-site at
the above na med facility

.

Issued by the Depart ment of Environm en tal Quality

/ /
Si gna ture Date

Permit Issua n ce and Appeal Process es : In accordance with ARM 17.8.1210(j), the Depart ment of
Environm ental Quality’s ( D epart m ent) decision regardi ng issuanc e of an operating perm it is not effective
until 30 da y s have elapsed from the date of the d ecision issued May 21, 2003. T h e decision may be appealed to the Board of E nvironm ental Review by fi l i ng a request for a hearing within 30 da ys after the
date of decision. If no appeal is filed then the De partment will sen d notification and a final perm it cover page to be attached to this docum ent stat ing that th e p e rm it is final. In additi on, ARM 17.8.1 2 33 allows for any person to petiti on t h e Enviro nmental Protection Agenc y (E PA) within 60 da y s after the expiration
of EPA’ s 45-day review period to object to issu ance of this operati ng perm it. If EPA objects to the operating per m it as a result of a petition prior to t h e De part m e nt’s notification of a final perm it , CFAC
and all affect ed parties wil l be inform ed of the st a y of a final perm i t . If the Depart m e nt has alr eady
notified CFAC and all affe cted parties, the Depart me nt shall issue a revised per m it according to ARM
17.8. 123 1. Q u estions regarding t h e final issuance date and status of appeals should be directed to the Department at (406) 444- 3 490.

Perm it Nu m b er : OP2655- 01 i Date of Decision: 05/21/ 03

E ffective Date: 06/21/03`Mon tan a Air Quali t y Opera tin g Perm it

D e partm e nt of Env i ronm ent a l Q u a l i t y

SECTION I. GENERAL INFORMATI O N

....................................................................................................... 1

SECTION II. SUMMA RY OF EMISSION UNITS

....................................................................................... 2

A. FACILITY-WIDE



### ................................................................................................................. 4

B. EU001
– EU007 MATE RIAL HANDLI NG EMITTING UNITS WITH BAGHOUSES



### ............... 6

C. EU008 – EU014 EU’S WITH BAGHOUSES & GRAIN LOADING RESTRICTIONS



### ................. 8

D. EU 015 - EU 0 17 PA STE PLA N T EMITTIN G U N ITS WITH BA G H O U S ES



### ............................... 9

E. EU018 – PIT C H STORAGE TANKS - PP04



### .......................................................................... 11

F. EU 019 - TH ERMIN O L O I L H E A T IN G SY STEM - PP05



### ....................................................... 11

G. EU 020 - EU 0 23 PRIMA R Y SCRU BBER SY STEM A L U M IN A TRAN SFER EU ’S



### ................... 12

H. EU024 - EU033 PRIMARY GAS COLLEC TION SYSTEM EMITTI NG UNITS



### ....................... 13

I. EU 034 - EU 0 38 PO TLIN E RO O F V E N T EMITTIN G UN ITS



### ................................................. 16

J. EU 039 - EU 0 43 CA STIN G FU RN A C E EMITTIN G UN ITS



### .................................................... 18

K. EU 044 - EU 0 48 CA STIN G PIT EMITTIN G U N ITS



### ............................................................... 19

L. EU 049 - EU 0 50 A L U M IN U M SA W EMITTIN G UN ITS



### ........................................................ 20

M. EU051 – SANDBLASTING ACTIVITIES - CR01



### ................................................................. 20

N. EU052 – LE C T ROMELT F U RNACE EMITTING UNIT - CR03



### ............................................ 22

O. EU 053
– RO D MILL/MA TERIA L STO R A G E EMITTIN G U N IT - CR0 4



### ................................ 23

P. EU 054 – EU 0 62 N A T U R AL G A S BO ILER EMITTIN G U N I TS



### ............................................. 23
Q. EU063 – T R UCK, EQUIPMENT, AND HAUL ROAD EMISSIONS – MP05



### ............................ 24

R. EU 064 – G A S O L IN E STO R A G E (TA N K ) EMITTIN G U N I T – MP04



### ..................................... 25

SECTION I V NON-APPLICABLE REQUIREMENTS

............................................................................ 27

A. FACILITY-WIDE



### ............................................................................................................... 27

B. EMISSION U N ITS



### ............................................................................................................. 27

SECTIO N V – GE NER A L PERM IT C O NDITI ON S

.......................................................................................... .. 28



### A. Co m p liance Requirem e nts



### .................................................................................................. 28

B. Certification Requirem e nts



### ................................................................................................. 28

C. Perm it Shield



### ..................................................................................................................... 29

D. Monitorin g , Recordkeeping, and Report i ng Requirements



### .................................................... 30

E. Prom pt Deviation Reportin g



### ............................................................................................... 31

F. Em ergency Provisions



### ........................................................................................................ 31

G. Inspection and Entr y



### .......................................................................................................... 32

H. Fee Pay m ent



### ...................................................................................................................... 32

I. Minor Perm it Modification s



### ................................................................................................ 32

J. Changes Not Requiring Per m it Revision



### .............................................................................. 33

K. Significant P e rm it Modifications



### ......................................................................................... 34

L. Reopening fo r Cause



### .......................................................................................................... 34

M. Perm it Expiration and Rene wal



### ........................................................................................... 34

N. Severability Clause



### ............................................................................................................ 35
O

. Transfer or A ssign m e nt of Ownership



### ................................................................................. 35

P. Em issions Trading, Marke t ab le Perm its, Econom ic In centives



### .............................................. 35 Q. No Propert y Rights Conve y e d



### ............................................................................................. 35

R. Testing Requirem e nts



### ......................................................................................................... 36

S. Source Testing Protocol



### ...................................................................................................... 36

T. Malfunctions



### ..................................................................................................................... 36

Perm it Nu m b er : OP2655- 01 ii Date of Decision: 05/21/ 03

E ffective Date: 06/21/03

### U. Circu m vention



### ................................................................................................................... 36

V. Motor Vehicles



### .................................................................................................................. 36

W. Annual Em issions Invento r y



### ............................................................................................... 36

X. Open Burning



### .................................................................................................................... 36

Y. Preconstruction Perm its



### ...................................................................................................... 36

Z

. National Em ission Standard for Asbestos



### ............................................................................. 37

AA. Asbestos



### ............................................................................................................................ 37

BB. Stratospheric Ozone Protection – Servic ing of Motor Vehicle Air Conditioners



### ..................... 37

CC. Stratospheric Ozone Protection – Rec y cling and Em ission Reductio ns



### .................................. 37

DD. Em ergency Episode Plan



### .................................................................................................... 38

EE. Definitions



### ......................................................................................................................... 38

APPENDIX A - RULE CI TATION

................................................................................................................... A- 1

APPENDIX B - INSIGNI F ICANT EMISSION U N I T S

.................................................................................. B-1

APPENDIX C - DEFINITIONS AN D A BBREVIATIONS

........................................................................... C- 1

APPENDIX D - NOTIFIC A TION AD D R ESSES

............................................................................................ D- 1

APPENDIX E - AIR QUA L ITY INSPECTOR INFO RMATION

................................................................. E-1

APPENDIX F - CFAC M ACT IMPLEMENTATION PLAN

........................................................................ F-1

APPENDIX G - CFAC M ACT QUICK REFERENCE GUIDE

................................................................... G- 1

APPENDIX H - STARTU P , SHUTDOWN AND M A LFUNCTI O N PLAN (S SM)

................................... H- 1

APPENDIX I - CFAC PO M COMPLIANCE SCHE DULE

............................................................................ I-1

APPENDIX J - POTLINE ROOF VENT OPACITY COMPLIAN CE DEMON S TRATION

................. J- 1

APPENDIX K - POLLUTION CONTR O L DEVICE INSPECTIO N AND M A I N TENANCE PLAN

.. K- 1

APPENDIX L - 62 FR 52 38 3

............................................................................................................................... .L

- 1

Perm it Nu m b er : OP2655- 01 iii Date of Decision: 05/21/ 03

E ffective Date: 06/21/03Term s not o t h e rw ise defi ne d i n t h is perm it or i n the D e fini ti ons an d A bbre v ia ti ons A ppen d i x of t h is perm it
hav e t h e m eaning assi gne d t o t h em in the referenc ed re g u la tio ns.

SECTION I. GENERAL INFORMATI O N

The fo ll ow in g ge neral inf o rm ation is pr ov ide d p u rsua nt to A R M 1 7 .8

. 1 2 10(1).

C o mpany N a me: Co lum b ia Falls Al um in u m Co m p any LLC

Mailin g Address: 20 00 A l u m inum Drive

City : C o lu m b i a Fa ll s State: MT Zi p : 5991 2

Plant Location: Colum b ia Falls; NE1⁄4, S E 1⁄4, Secti o n 3

, Towns h i p 3 0 North, Ra nge 20 West

Responsible Official: Mr. Steve K n ight Phone: 40 6-8 92-8 2 2 5

Facility Contact Person(s): Steve Wri g ht Phone: 40 6-8 92-8 2 1 1
Bria n Hohn Phone: 40 6-8 92-8 2 1 2

Prima r y SIC Co de: 33 34

Nature of Bu siness: Prim ary A l u m inu m Produc ti on

Description of Process:

CFAC oper a te s five Vert ica l Stud Sod e rbe r g po tl ines at t h e C o l u m b ia Falls p l a n t. E ach po tl ine ha s 12 0
ind i v i d u al ce ll s tha t prod uce alum inum by the H a ll-H e ro ult pro cess. A n n u al op erat in g ca pa city is

appr oxim a tely 18 5, 00 0 t ons of A l um inu m , base d on an a v erag e c u rrent efficie n cy of 90. 5%.

The H a ll-H e roul t process c onsis ts of pass ing an el ect r i c curren t t h ro u gh alum inum oxi de ore, or a l um ina (Al 2 O 3 ), d i sso lve d i n m o lten cry o lit e. The redu cti o n pro cess is acc om plis he d i n a V e rtica l St ud S oder b erg
st yl e po t

. Soderb erg t e ch no lo g y descri bes t h e t y p e of c o nsum able carb on an ode use d in th e pr ocess

.

The cel ls or “ pots ” are h ous ed i n bu ild in g s cal led p o tro o m s ; two p o tr oom s are con n ecte d e l ec tric a lly in series
to form one potl ine

. CFAC currently has 10 potroom s that com p rise t h e fi ve potli ne s. Em issions fro m each
pot are di vi de d i n t o tw o ca t e gori e s: prim ary em issi ons a nd se co nd ary em issions. Pr im ary em issions are
capture d a t t h e pots a n d routed to the pri m ary air poll u tio n c o n t rol sy stem , the A 3 9 8 dry al um ina scrubb ers. Secondary em issions are f u giti ve e m i ssion s fro m the p o t s tha t are ve nt ed out t h e ro o f line of t h e p o t room s.

Alu m ina is fe d i n t o a m o lte n b a th of cry o lite , a n d he ate d t o a b o u t 95 0 ° C (17 40°F). Throu g h th e elec troc hem i cal pr ocess, el e c tric ity pass es fro m the a n ode t o the ca thode , ca usi n g t h e a l um inu m to be reduc e d.
The alum inu m m e tal sin k s bel o w th e cry o li te bat h to f o rm a m o lten alum inu m “ p ad.” Th e e vol v e d oxy ge n
atom s bond w ith th e c a rbo n in the an od e o f the cel l t o fo rm carbon m o no xid e a n d ca rbon di ox id e. O t her

em issions fro m the pro cess inc l u d e bo th p a rtic ula t e fl uo ride an d g a seo u s hy dro g e n fl uori d e as w e ll as hy drocar bo n e m issions co nt ain i n g p o ly cy clic org a n i c m a tter. T h e a l u m inu m m e tal is siph on ed from the p o t

every 4 8 h our s and tra n sp orted to th e C a st ing D e par t m e nt

, w h ere it is cast int o in got s of var i ous sizes, shapes
and al loy s . T y pical ly ea ch pot pro d u ces a ppro x im ately 17 00 po un ds of al um inu m per d a y

.

Perm it Nu m b er : OP2655- 01 1 Da te o f Decisio n : 0 5 / 2 1 / 03

E ffective Date: 06/21/03SECTION II. SUMMA RY OF EMISSION UNITS

The em ission uni ts reg u l a te d by t h is perm it are t h e fo ll o w ing [A RM 1 7 .8 .1 21 1]:

Emission Unit ID Emission Unit Description Polluti on Co ntrol Dev i ce or P r acti ce
EU 001 Ball Mi ll N o rt h - MH 0 1 Bag h o u se EU 002 Ball Mi ll S out h - MH 0 2 Bag h o u se EU 003 Cok e Sil o - M H 04 Bag h o u se EU 004 East A l um ina Elev at or - MH 06 Bag h o u se EU 005 East A l um ina U n loa d i ng - MH 07 Bag h o u se EU 006 East C o n v ey o r Storage - M H 08 Bag h o u se EU 007 West A l um ina U n lo adi n g - MH 09 Bag h o u se
EU 008 A node D u st C ontr o l Sy stem - MH 03 Bag h o u se EU 009 Cok e U n l o a d i ng - MH 05 Bag h o u se EU 010 West Co nv ey or Stora g e - MH 10 Bag h o u se EU 011 Potli ne Sw ee p i ng - A R 0 4 Bag h o u se EU 012 Treatm e nt of A l u m inum Cruci b les (TA C )
O p erati ons - CO 10 Bagh ou se

EU 013 Pin Cl ea ni ng - West Pla n t - CR0 7 Bag h o u se EU 014 Pin Cl ea ni ng - East Pl ant - C R 07 a Bag h o u se
EU 015 Paste Pla n t Ex truder - PP0 1 Proceda i r D r y Co ke Scru bb er (Bag ho use)

EU 016 Paste Pla n t Mi xer - PP02 Proceda i r D r y Co ke Scru bb er (Bag ho use)

EU 017 Pinh ole Past D r y i ng - PP03 Bag h o u se
EU 018 Pitch Stora g e Tank V e n t s - PP04 Con d e n sat i o n Tow e r/V e n t

EU 019 Therm i nol O i l H eati n g Sy stem - PP05 N one
EU 020 East Pla n t D r y Scrubb er A l u m ina Transfer (N orth)

- A R 01 Bagh ou se

EU 021 East Pla n t D r y Scrubb er A l u m ina Transfer (Sout h)

- A R 02 Bagh ou se

EU 022 West Pla n t D r y Scrubber A l u m ina Tra n sfer (North) - AR06 Bagh ou se

EU 023 West Pla n t D r y Scrubber A l u m ina Tra n sfer (South) - A R 0 7 Bagh ou se

EU 024 Prim ary G a s Col l ec tio n Sy stem - West Plan t (Potli nes 1 & 2) - A R 05 Alcoa A 3 98 Dry Alu m ina Scrubber #1 (React or #1 & Baghouse)

EU 025 Prim ary G a s Col l ec tio n Sy stem - West Plan t (Potli nes 1 & 2) - A R 05 Alcoa A 3 98 Dry Alu m ina Scrubber #2 (React or #2 & Baghouse)

EU 026 Prim ary G a s Col l ec tio n Sy stem - West Plan t (Potli nes 1 & 2) - A R 05 Alcoa A 3 98 Dry Alu m ina Scrubber #3 (React or #3 & Baghouse)

EU 027 Prim ary G a s Col l ec tio n Sy stem - West Plan t (Potli nes 1 & 2) - A R 05 Alcoa A 3 98 Dry Alu m ina Scrubber #4 (React or #4 & Baghouse)

EU 028 Prim ary G a s Col l ec tio n Sy stem - East Pl ant (Potli nes 3, 4, & 5)
- A R 0 5 Alcoa A 3 98 Dry Alu m ina Scrubber #5 (React or #5 & Baghouse)

EU 029 Prim ary G a s Col l ec tio n Sy stem - East Pl ant (Potli nes 3, 4, & 5)
- A R 0 5 Alcoa A 3 98 Dry Alu m ina Scrubber #6 (React or #6 & Baghouse)

EU 030 Prim ary G a s Col l ec tio n Sy stem - East Pl ant (Potli nes 3, 4, & 5)
- A R 0 5 Alcoa A 3 98 Dry Alu m ina Scrubber #7 (React or #7 & Baghouse)

EU 031 Prim ary G a s Col l ec tio n Sy stem - East Pl ant (Potli nes 3, 4, & 5)
- A R 0 5 Alcoa A 3 98 Dry Alu m ina Scrubber #8 (React or #8 & Baghouse)

EU 032 Prim ary G a s Col l ec tio n Sy stem - East Pl ant (Potli nes 3, 4, & 5)
- A R 0 5 Alcoa A 3 98 Dry Alu m ina Scrubber #9 (React or #9 & Baghouse)

EU 033 Prim ary G a s Col l ec tio n Sy stem - East Pl ant (Potli nes 3, 4, & 5)
- A R 0 5 Alcoa A 3 98 Dry Alu m ina Scrubber #10 (React or #10 & Baghouse)

EU 034 Potli ne #1 Ro of V e nt , West Plant - A R 03 N one

Perm it Nu m b er : OP2655- 01 2 Da te o f Decisio n : 0 5 / 2 1 / 03

E ffective Date: 06/21/03EU 035 Potli ne #2 Ro of V e nt , West Plant - A R 03 N one EU 036 Potli ne #3 Ro of V e nt , Eas t Plant - A R 03 N one EU 037 Potli ne #4 Ro of V e nt , Eas t Plant - A R 03 N one EU 038 Potli ne #5 Ro of V e nt , Eas t Plant - A R 03 N one
EU 039 Casti n g Furna ce # 3 - CO 01 N one EU 040 Casti n g Furna ce # 4 - CO 02 N one EU 041 Casti n g Furna ce # 6 - CO 03 N one EU 042 Casti n g Furna ce # 7 - CO 04 N one EU 043 Casti n g Furna ce # 8 & #9
- CO 05 N one
EU 044 Casti n g Pit #3 - CO 06 N one EU 045 Casti n g Pit #4 - CO 06 N one EU 046 Casti n g Pit #6 & #7 - CO 0 6 N one EU 047 Casti n g Pit #8 & #9 - CO 0 6 N one EU 048 D r oss H a ndl in g - CO 0 7 N one
EU 049 Sheet I n g o t Sa w – CO 0 8 Target Bo x a n d Cy cl on e EU 050 T-Ingot Saw
– CO 09 Target Bo x a n d Fil t er or Cy clo n e
EU 051 Sand blas tin g A c tiv iti es - C R 01 N one
EU052 Lectrom e lt Fu rnace - CR 03 Bag h o u se
EU 053 Rod Mi ll / M a teria l Stora g e - CR0 4 Bag h o u se
EU 054 Cha nge H ous e Bo iler #1
- MP01 N one EU 055 Cha nge H ous e Bo iler #2
- MP02 N one EU 056 Lab B o i l er #1 - MP07 N one EU 057 Mac h in e Sh op Boi l er #1 - M P 08 N one EU 058 Mac h in e Sh op Boi l er #2 - M P 09 N one EU 059 Paste Pla n t Bo iler #1 - MP1 1 N one EU 060 Paste Pla n t Bo iler #2 - MP1 2 N one EU 061 Wareho use B o il er # 1 - MP 16 N one EU 062 Wareho use B o il er # 2 - MP 17 N one
EU 063 H a ul R o a d E m issions - MP 05 N one
EU 064 G a soli ne St orage Tan k - M P 04 N one

Perm it Nu m b er : OP2655- 01 3 Da te o f Decisio n : 0 5 / 2 1 / 03

E ffective Date: 06/21/03

### Section III Permit Conditions

The foll owing requirem ents and condit ions are a p plic abl e to t h e fa cil i t y or to s p ec ifi c em ission uni t s locat ed at
the f aci lity (ARM 1 7

. 8 .1 21 1

, 12 12 , a nd 12 13).

A. FACILITY-WIDE

Conditions Rule Citation Rule De s crip t io n P o l l u tan t /Para m e t e r L i m i t

A.1 ARM 17.8.304( 1) Visible Ai r Contaminants Opacity 40%

A.2 ARM 17.8.304( 2) Visible Ai r Contaminants Opacity 20%

A.3 ARM 17.8.308( 1) Particul at e Matt er, Ai rborne Fugitive Op aci t y 20%

A.4 ARM 17.8.308( 2) Particulate Matter , Airborne Reasonable Precautions
------- A.5 ARM 17.8.308( 3) Particulate Matter , Airborne Reasonable Precaution

, Construction 20%

A.6 ARM 17.8.309 Particulate Matter, Fuel Burn ing Equipment Particulate Matter E = 0.882 * H -0.1 664

Or

E = 1.026 * H -0.2 33

A.7 ARM 17.8.310 Particulate Matt er, Industrial Pro cesses Partic ulate Matter E = 4.10 * P 0.67 Or

E = 55 * P 0.11 - 4 0

A.8 ARM 17.8.322( 4) Sulfur Oxide Emissions, Sulfur in Fuel Sulfur in Fuel ( l iquid or solid fuels) 1 lb/MMBtu Fir e d

A.9 ARM 17.8.322( 5) Sulfur Oxide Emissions, Sulfur in Fuel Sulfur in Fuel (g aseous) 50 gr/100 CF

A

. 1 0 A R M 17.8.324( 3 ) H y droc arbon Emissions, Petroleum
Products Gasoline Stor ag e Tanks
-------

A

. 1 1 A R M 1 7

. 8

. 3 2 4 H y drocar bon Emissions, Petroleum
Products 65,000-Gallon C a pacity
-------

A

. 1 2 A R M 1 7

. 8

. 3 2 4 H y drocar bon Emissions, Petroleum
Products Oil-efflu e nt Water Separ a tor -------

A.13 ARM 17.8.1212 Reporting Require m e n t s C o m p l i a n c e M o n i t o r i n g

- - - - - - - A.14 ARM 17.8.1207 Reporting Require m e n t s A n n u a l Cer t i f

i c a t i o n

- - - - - - -
A

. 1 5 A R M 17.74.336 Asbe s t o s A s b e s t o s

- - - - - - - A.16 40 CFR Part 63

, Subpart LL Aluminum MACT Fluoride, Poly cy cl ic Organi c Mat t e r See Appendix G

Conditions

A.1.

A

. 2.

A.3.

A

. 4.

A.5. Pu rsuant to ARM 17 .8.304 (1 ), C F AC sha ll not cau se o r aut h o r iz e e m i ssion s to be d i scha rg ed into the

ou

tdoo r atm o sph e re fro m an y

so urce in stalled on o r be fo re Nov e m b er 23, 196 8, that ex hibit an op acity o f

40 % o r g r ea te r ave r aged ove r 6 co nsecu tive m i n u

t e s , unl ess o t he rwi s e spec i f ied b y rule or in thi s p e rm i t

.

Pursuan t t o A R M 1 7

. 8 .3 04( 2), CFA C sh al l n o t caus e or aut hori ze em issions to be di scharg ed in to the

out do or a t m o sphere fro m an y source inst al led after N o ve m b er 23, 19 68 , th at ex hi bit a n o p ac ity of 2 0 %

or grea ter a v er age d o v er 6 c onse c ut iv e m i nut es, un le ss oth e rwise sp e c ifie d by ru le or in t h is per m it.

Pu rsuant to ARM 17 .8.308 (1 ), CF AC sha ll not cau se o r aut h o r iz e t h e p r odu ction, handling, tr a n s por t a

ti on,

o r

sto r ag e o f an y m a te rial unle s s rea s ona ble p r e cau tion s to contr o l em issi ons of pa rt i c ul at e m a tt er ar e t a ke n. Su ch em issi on s of a i r bor n e p a rt i c ul a t e m a tt er fr om a

n

y stat iona ry sou r ce sha ll n o t exhibit an op acity o f 20%

or gr e a t e r a v er ag e d o v e r 6 co ns ec u t iv e m i nu te s, un l e ss ot h e rwis e s p e c if i e d by r u l e or i n t

h is p e rm it.

Pursuan t t o A R M 1 7

. 8 .3 08( 2), CFA C sh al l n o t caus e or aut hori ze the use of any stre et, ro ad or par k in g lot w ith ou t t a k i ng reaso n a b le preca ut io ns t o c ontr o l em issions of a i rbor ne parti c u l at e m a tter, u n less
oth e rwise sp e c ifie d by ru le or in t h is per m it.

Pursuan t t o A R M 1 7

. 8 .3 08( 3), CFAC sh al l n o t op erate a co nstruc ti on s ite or d e m o liti on proj ect u n l e ss

reason ab le pre cau tio ns are ta ken to c ontr o l em issions of a i rborn e p a rti c ula t e m a tter. Such em ission s of
airbor ne part i c ul ate m a tter f r o m any stati o nary sourc e sh all no t e x h i b it an opa ci ty of 20% or gr eat e r

avera g e d o v er 6 c ons ecu ti ve m i nutes, u n le ss oth e rw ise s p ec ified by ru l e or i n this per m it.

Perm it Nu m b er : OP2655- 01 4 Da te o f Decisio n : 0 5 / 2 1 / 03

E ffective Date: 06/21/03A

. 6.

A

. 7.

A

. 8.

A

. 9.

A

. 10.

A

. 11.

A

. 12. Pursuan t t o A R M 1 7

. 8 .3 09

, unl ess o t herw i s e spe c ifie d b y rule or in th i s perm it, CFAC sha ll no t c a u se

or au th orize p a rtic ula t e m a tter caus e d by t h e c o m bustio n of fu el to be disc harg ed fro m any stac k or chim ney into t h e out do or a t m o sphere i n e x cess of t h e m a xim u m allow a bl e em ission s of par tic ula t e

m a tter for ex is tin g fu el burn i ng eq uipm ent and new f u el burn i n g e q u i p m ent, ca lcu l a t ed usin g the
follow i n g e q u a ti ons:

For exis ti ng f u el bur ni ng eq uipm ent (ins ta lle d b e fore N o vem b er 23, 19 68): E = 0. 88 2 * H -0. 1 664

For new fue l burn i n g e q u i p m ent (inst a ll e d o n or after N ovem b er 23, 19 68): E = 1. 02 6 * H -0 .233

Where H is th e he at in pu t c a p ac ity i n m illion BTU (MM B tu) per h our and E is th e m a xim u m allowabl e parti c u l at e em issio n rat e i n po un ds p e r M M Bt u.

Pursuan t t o A R M 1 7

. 8 .3 10

, unl ess o t herw i s e spe c ifie d b y rule or in th i s perm it, CFAC sha ll no t c a u se

or au th orize p a rtic ula t e m a tter to be dis c ha rged from any op erati o n , pr ocess, or a c ti v ity in to th e
out do or a t m o sphere i n e x ces s of t h e m a xim u m hourly allow a ble em issions of p a rti c ula t e m a tter, calc u l a te d usi ng the fol l ow i ng eq uat i o n s:

For proc ess w e ig ht ra tes up to 30 to ns p e r ho ur: E = 4

. 1 0 * P 0. 6 7
For proc ess w e ig ht ra tes in excess of 30 t ons per h our : E = 5 5

. 0 * P 0. 1 1 – 40

Where E is t h e rate of em issions in p o u nds per ho ur an d P is th e pr oces s w e igh t ra te i n t ons per ho u r

.

ARM 1 7 .8 .3 1 0 (3)(a) stat es t h at th is rul e d o es n o t ap ply to parti c u l at e m a tter e m itted fro m the red u c ti on cells of a prim ary alum inu m reduc ti on pl an t; t h eref ore, A R M 1 7

. 8 .3 10 does no t a p p l y to part ic ula t e

em issions fro m the roof m onit o rs of the p o tl ine b u i l di n g s, n o r d o es it ap ply t o p a rti c ul ate em issions
fro m t h e p r i m ary co nt ro l sy st e m (Al c o a A3 98 Dry Al u m i n a Scru bb ers). Ho wever, ARM 17 .8 .31 0 is

app lic ab le to a ll oth e r (no n c o m busti on) processes at CFAC.

Pursuan t t o A R M 1 7

. 8 .3 22( 4), CFA C sh al l n o t bur n l i q u i d or sol i d fue l s co nt ain i n g s u lfur i n exc e ss of 1 p o u n d per m ill io n BTU fir e d, un less oth e rw ise spe c ifi e d by rule or i n t h is perm it.

Pursuan t t o A R M 1 7

. 8 .3 22( 5), CFA C sh al l n o t bur n a n y gase ous fu el c ont ai nin g s u lf ur com poun ds in

excess of 50 grains per 100 cubic fe et of gaseous fue l , c a lc ula t ed as h y d roge n su lfid e at sta ndar d

con d i tio ns, un less o t herwise spec ifie d by r u le or i n t h is p e rm it.

Pursuan t t o A R M 1 7

. 8 .3 24( 3), CFA C sh al l n o t loa d or p e rm it the lo ad i ng of g a sol i n e in to any stati o n a ry tan k w i t h a ca pac ity of 25 0 g a ll ons or m o re fro m any tan k truck or tr ail e r, exce pt t h rou g h a

perm anent su b m erged fi ll p i pe, u n less s u c h ta nk is eq ui ppe d w i t h a v a por loss co nt rol d e v i ce or i s a pressure tan k as des c ribe d i n A R M 17 .8. 3 24(1), un le ss oth e rwise sp e c ifie d by ru le or in t h is per m it.

Pursuan t t o A R M 1 7

. 8 .3 24

, unl ess o t herw i s e spe c ifie d b y rule or in th i s perm it, CFAC sha ll no t p l a ce,
store or h o ld i n a n y stat io na ry tank, reserv oir or ot her c o nta i ner w i th m o re t h a n a 65

, 0 0 0 -gal lo n

capa c i t y any c r ude oi l, gaso l i ne or p e tro l e u m distill ate h a vin g a v a p o r p r essure of 2.5 po un ds p e r

square in ch ab solu te or gre a t e r un der a c t u a l stora g e co nd iti ons, u n less such ta nk, res e rvoir or o t h e r

con t ai ner is a pressure tan k m a intai n i ng w o rki ng pressur e suffic i en t a t all tim es to pr eve n t hy droc a r bon

vap o r or gas l o ss to t h e a t m o sph e re, or is desi gne d an d equ i p p e d w i t h a v a p o r l o ss c ontr o l de vic e , prop erly ins t al led, i n g o o d w o rki ng order a nd in op erat io n.

Pursuan t t o A R M 1 7

. 8 .3 24

, unl ess o t herw i s e spe c ifie d b y rule or in th i s perm it, CFAC sha ll no t us e

any com p art m ent of a n y sin g le or m u ltipl e -com part m e n t o il-efflu e n t water sep a rat o r which

com p art m ent recei ves effl uent wa te r c o nt aining 200 ga l l ons a day or m o re of any petrol eum product
fro m any equi p m ent pr ocess i ng , refi nin g , t r eati ng, stor in g or ha ndl in g kerose ne or o t her p e tro l eum prod uct of eq u a l or grea ter v o la til ity t h a n k e rosen e , unles s such com p art m ent is eq uip p ed w ith a va por loss c o n t rol de vic e , c ons truc t e d so as to pre v en t em ission of hy dro carb o n v a p o rs to th e atm o sphere,

prop erly ins t al led, i n g o o d w o rki ng order a nd in op erat io n.

Perm it Nu m b er : OP2655- 01 5 Da te o f Decisio n : 0 5 / 2 1 / 03

E ffective Date: 06/21/03

### On or before January 3 1 an d Jul y 3 1 of e ach y ear, CFAC shall submit to the Depart m e nt the

co m p liance m onitoring reports required by Section V

. D. These re ports m u st co ntain all
inform ation required by Se ction V.D, as well as the information required by each individual

em issions uni t. For the rep o rts due b y Ja nuar y 31 of e ach y ear, CFAC m a y submit a single report, provided that it contains all the inform ation required b y Section V. B & V.D. Per ARM 17.8. 1207

, A

. 13.

A

. 14.

A.15.

A.16.

B. 

### any applicati on form, report, or comp liance certification submitted pursuant t o ARM Title 17, Chapter 8, Subchapter 12 (including semiannual monitoring reports), shall contain cert ification by a responsible official of trut h, accuracy and completeness. This certification and any ot her certification required under ARM Title 17, Chapter 8, Subchapter 12, shall state that, “b ased on information and belief for m ed after rea sonable inquiry, the state m ents and information in
the documen t are true, accurate and complete.”

By January 31 of each y ear, CFAC shal l subm it to the Depart ment the com p lian ce certifi cation report required b y Section V.B. The annual certification report req u ired b y Secti on V.B m u st include a state m ent of co mpliance based on the information availa ble, which identifies any observed, doc umented or ot herwise known inst ance of noncom pliance for each ap plicable requirem e nt. Per ARM 17.8.12 07,

any applicati on form, report, or comp liance certification submitted pursuant t o ARM Title 17, Chapter 8, Subchapter 12 (i ncluding annual certifications), shall contain certification by a responsible off i cial of truth, accuracy and completeness. This certification and any other certification require d under ARM Title 17, Chapter 8, Subchapter 12, shal l state that, “ based on info rmation and belief formed after reasonable inquiry, the statement s and information in the document are true, accur a te and complete.”

Pursuan t t o A R M 1 7

. 74. 33 6

, CFAC sha ll com p ly with a ll t h e lim itatio ns an d re qu ire m ents of t h eir

A s bestos A b at em ent A n n u a l Perm it #MTF 00 07.

CFAC shal l sa tisfy all of t h e app lic ab le re q u irem ents, in c l ud in g em ission lim itatio ns, test in g,

m onitori ng , re cord kee p i ng, and rep o rti ng, of 4 0 CFR Pa rt 63 , Su bpart LL, N a ti on al Em ission
Standards for Hazardous Ai r Polluta nts for Pri m ar y Alum inu m Reduc tion Pla n ts (Al u m i num MACT).
CFAC shal l a l so sat i sfy the r e qu irem ents o f the Co m p lia nce Sc he du le con t ai ne d i n A ppen d i x I of th is

perm it.

EU001 – EU 007 MATER IAL HANDL ING EMITTING UNITS WITH BAGHOUSES

EU001 - Ba ll Mill No rth - MH01
EU002 - Ba ll Mill South - MH02
EU003 - Coke Silo - MH04

Compliance Demonstration C o n d i t i o n ( s ) P o l l u t a n t /

Paramet er Perm it Lim i t

M e t h o d F r e que ncy Reporting Req u i remen ts

Method 9 As Required b y the Department Semi-annual B.1, B

. 4, B.5

, B.7, B

. 9 Opacity 2 0 %

Baghouse I & M (Appendix K) O n g o i n g S e m i

- a n n u a l

B.3, B

. 6, B.8

, B.9 P a rticul at e Matter E = 55*P 0.11 – 40 Method 5 As Required b y the Department Semi-annual

Perm it Nu m b er : OP2655- 01 6 Da te o f Decisio n : 0 5 / 2 1 / 03

E ffective Date: 06/21/03EU 004 - East A l umina E l e vato r - MH0 6

EU 005 - East A l umina U n l oading - MH 07 EU 006 - East C o nvey or St ora g e - MH 0 8

EU 007 - Wes t A l umina U n loadin g - MH 09

Compliance Demonstration C o n d i t i o n ( s ) P o l l u t a n t /

Paramet er Perm it Lim i t

M e t h o d F r e que ncy Reporting Req u i remen ts

Method 9 As Required b y the Deptartm ent Semi-annual B.2, B

. 4, B.5

, B.7, B

. 9 Opacity 4 0 %

Baghouse I & M (Appendix K) O n g o i n g S e m i

- a n n u a l

B.3, B

. 6, B.8

, B.9 Particulate Matter E = 55*P 0.11 – 40 Method 5 As Required b y the Department Semi-annual

Conditions

B.1.

B.2.

B.3.

B.4.

B.5.

B.6.

B.7.

B.8.

B.9. CFA C shal l n o t c a us e or aut horiz e em issions t o be discharged t o t h e at m o sphere from the Ba ll
Mil l N o rt h-M H 01, B a l l M i l l Sou t h-MH 0 2

, an d C o k e Sil o -MH 0 4

, t h at exh i b it an op a c ity of
20% or gr eat e r avera g e d o v e r 6 c ons ecu ti ve m i nutes (A RM 1 7

. 8 .3 04( 2)).

CFAC shal l not c a us e or aut horiz e em issions t o be discharged t o t h e at m o sphere from the East

A l u m ina El ev ator-MH 0 6, E a st A l um ina U n lo ad in g-MH 07, East Co nv ey or Storag e-MH 08, an d
West A l um ina U n lo adi ng- M H 09, tha t e x h i bit an o p ac ity of 40 % or gre a ter a v era g e d over 6

cons ecu ti ve m i nu tes (A RM 17. 8. 30 4(1)).

The part iculat e em issions fro m process w e ight s h al l not exc e e d t h e va lue ca lculat ed by E =

55. 0*P 0. 1 1 -4 0, w h ere E is t h e rate of em issions in po un ds per h our an d P is th e pr oces s w e igh t rate i n to ns p e r hour (A R M 17. 8. 31 0).

Compliance Demonstration

A s require d b y the D e partm e nt, CFA C sh all perform a Met h o d 9 tes t in a c c o rda n ce w ith the M ont ana Source T e st P r otoc ol an d Pr oce dures Ma n u al (A R M 1 7

. 8 .1 06). Ea ch observ a t i o n p e riod sha ll be a

m i nim u m of 6 m i nutes, u n le ss any o n e re a d in g is gr e a ter tha n the rele v a nt op ac ity li m it (20% or 40%); th en th e o b serva t i on perio d s h al l b e a m i nim u m of 20 m i nutes or un ti l a vi ol ati on of t h e
stan dard has b een do cum e nted, w h ic he ver is a s hort e r p e riod of t i m e (A RM 1 7 .8 .1 2 13).

CFAC shal l operat e a nd m a int a in t h e ba ghouse in ac co rd a n c e wit h t h e Po l l u t io n co nt ro l d e v i ce Inspec ti on & Mai n te na nce Plan (A p p en di x K ) (A RM 1 7 .8 .1 21 3).

As require d b y the De partm e nt, CFAC sh all perform a Met h o d 5 tes t in a c c o rda n ce with the

Mon t a n a So ur ce Tes t Prot oc ol a n d Proce d ures Ma nu al ( A RM 1 7 .8 .1 2 13).

Recordkeepi n g

CFAC shal l m a in tai n on-sit e records of a ll insp ect io n a n d m a inte nan ce acti v i ties perf orm e d

on the b a g h o u s es in ac cord a n ce wi th th e P o ll ut io n C ontr o l De vic e Ins p ecti o n & M a in ten a nc e Plan (A p p en di x K ) an d su b m it records to the D e partm e nt up on re qu e s t (A RM 1 7

. 8

. 1 2 12).

Met h o d 5 an d Met h o d 9 tes t reports m u st b e m a inta in ed on s ite an d m u st be s ubm itted t o the Departm e nt, upon request

, i n ac cordance with the M ont ana S ource Proto c o l a nd Pro ced ures Manual (ARM 17.8.106).

Repo rting

The annua l c o m p lianc e c e rti f icat ion report required by Secti o n V.B m u st c o ntai n a certifi cat ion st atem ent for the above a p plic abl e requirem ents

. The sem i annual com p liance

m onitori ng re ports s h al l i n c l ud e a sum m a ry of (A RM 1 7 .8 .1 21 2):

Perm it Nu m b er : OP2655- 01 7 Da te o f Decisio n : 0 5 / 2 1 / 03

E ffective Date: 06/21/03a. The res u lts of any tes t c o n d u c te d d u rin g th e rep o rti ng pe riod; a nd

b. Any correct iv e ac ti ons tak e n as a resu lt of the i n spe c ti on s and m a inten a nce as require d by th e Pol l ut io n C o ntrol D e v i ce I n spe c ti on & Mai n te na nce Plan (A p p en di x K).

C. EU008 – EU014 EU’S WITH BAGHOUSES & GRAI N LOADING RESTRICTI O NS

EU 008 - A n ode D u st C o ntrol S y stem - MH03 EU 012 - Tr ea tment of A l uminum C r uci b les - C O 10

EU 009 - C o ke U n loadin g - MH05 EU 013 - Pin C l eaning - W e st Plant - C R 07

EU 010 - Wes t C o nvey or S t ora g e - MH1 0 EU 014 - Pin C l eaning - Ea st Plant - C R 0 7 a EU 011 - Potl i n e Sw eeping A R 04

Compliance Demonstration C o n d i t i o n ( s ) P o l l u t a n t /

Paramet er Perm it Lim i t

M e t h o d F r e que ncy Reporting Req u i remen ts

Method 9 As Required b y the Department Semi-annual C.1, C

. 4, C.5

, C.7, C

. 9 Opacity 2 0 %

Baghouse I & M (Appendix K) O n g o i n g S e m i

- a n n u a l

C.2, C

. 6, C.8

, C

. 9 Pa rticulate Matter E = 55*P 0.11 – 40 Method 5 As Required b y the Department Semi-annual

C.3, C

. 6, C.8

. C

. 9 Partic ulate Matter 0.02 gr/dscf Me thod 5 As Required b y the Department Semi-annual

Conditions

C.1. CFAC shal l not c a us e or aut horiz e em issions t o be discharged t o t h e at m o sphere from the

A node D u st C ontr o l Sy stem -MH 03, Co ke U n loa d i ng-M H 05, Wes t C o nvey o r St orag e-MH 10,
Potli ne Sw ee p i ng-A R 04, Treatm e nt of A l u m inum Crucibles-CO 1 0 , Pi n Cl ea nin g W e st Pla n tCR0 7, a n d Pi n Cl ea nin g E a st Plan t-CR 07 a, t h at e xhi bi t an opa ci ty of 20% or gr eat e r avera g e d

over 6 c ons ec uti v e m i nutes (A RM 17 .8. 3 04(2)). A s a r e sult of ve nti n g i n d oors, EU 01 3 a nd

EU 014 are no t curren tly su bj ect to th is (C. 1 ) req u irem ent.

C.2.

C.3

.

C.4.

C.5.

C.6.

C

. 7. The part iculat e em issions fro m process w e ight s h al l not exc e e d t h e va lue ca lculat ed by E =

55. 0*P 0. 1 1 - 4 0

, w h ere E is t h e rate of em issions in p o u nds per ho ur an d P is th e pr oces s w e igh t rate i n to ns p e r hour (A R M 17. 8. 31 0).

Part i c ul ate emi ssi on s sh al l no t ex ceed th e 0

. 02 g r / d scf (ARM 17 .8.715 ).

Complianc e Demonstratio n

A s require d b y the D e partm e nt, CFA C sh all perform a Met h o d 9 tes t in a c c o rda n ce w ith the M ont ana Source T e st P r otoc ol an d Pr oce dures Ma n u al (A R M 1 7

. 8 .1 06). Ea ch observ a t i o n p e riod sha ll be a

m i nim u m of 6 m i nutes, u n le ss any o n e re a d in g is gre a ter tha n 20% ; t h e n t h e obser vat i on per i o d sh a ll
be a m i nim u m of 2 0 m i nutes or u n t il a v i ol ati on of t h e s t and a rd has be en doc um ented, w h ich e v e r i s a shorter peri od of tim e (A RM 17 .8. 1 2 13). EU 013 an d E U 014 are not current ly su bj ect to C.1 a nd C.4.

CFAC shal l operat e a nd m a int a in t h e ba ghouse i n a c c o rdan ce wi th th e Poll uti o n C o n t rol De vic e Inspec ti on & Mai n te na nce Plan (A p p en di x K ) of t h is pe rm it (A RM 17 .8. 1 2 13).

As require d b y the De partm e nt, CFAC sh all perform a Met h o d 5 tes t in a c c o rda n ce with the

Mon t a n a So ur ce Tes t Prot oc ol a n d Proce d ures Ma nu al ( A RM 1 7 .8 .1 2 13).

Recordkeepi n g

Perm it Nu m b er : OP2655- 01 8 Da te o f Decisio n : 0 5 / 2 1 / 03

E ffective Date: 06/21/03 C F AC sha ll ma inta in o n

- site re co rd s o f al l in spe c ti on a nd m a i n ten a nc e ac tivi tie s pe rfo r m e d on the
b a ghou ses in acco rdan ce with Append ix K and sub m it the reco rd s to th e Departm e n t up on request.C.8.

C.9.

D. Met h o d 5 an d Met h o d 9 tes t reports m u st b e m a inta in ed on s ite an d m u st be s ubm itted t o the Departm e nt, upon request

, i n ac cordance with the M ont ana S ource Proto c o l a nd Pro ced ures Man u al

.

Repo rting

The annua l c o m p lianc e c e rti f icat ion report required by Secti o n V.B m u st c o ntai n a certifi cat ion st atem ent for the above a p plic abl e requirem ents

. The sem i annual com p liance

m onitori ng re ports s h al l i n c l ud e a sum m a ry of (A RM 1 7 .8 .1 21 2):

a. The res u lts of any tes t c o n d u c te d d u rin g th e rep o rti ng pe riod; a nd

b. Any correct iv e ac ti ons tak e n as a resu lt of the i n spe c ti on s and m a inten a nce as require d by th e Pol l ut io n C o ntrol D e v i ce I n spe c ti on & Mai n te na nce Plan (A p p en di x K).

EU015 - EU017 PASTE PLANT EMITTING UNIT S WITH BAGHOUSES

EU 015 - Past e Pl ant Extru d er - PP0 1 EU 016 - Past e Pl ant Mixe r - PP02

Compliance Demonstration C o n d i t i o n ( s ) P o l l u t a n t /

Paramet er Perm it Lim i t

M e t h o d F r e que ncy Reporting Req u i remen ts

Method 9 As Required b y the Department Semiannual D.2, D.5

, D

. 6, D.11, D.13

, D.15 Opacity 4 0 %

Visual Survey Daily Semiannual

D.3, D.8

, D

. 10, D.12, D.13

, D.15 P a rticul at e Matter E = 55*P 0.11 – 40 Method 5 As Required b y the Department. Semiannual

Operation of Dry Coke
Scrubber: CFAC MACT

Im

plem entation P l an (Appendix F) Ongoing Annual
Certifi c a tion D.4, D.9

, D

. 10, D.13, D.15 Poly cy cl ic Organic Matter (POM) None

Visual Survey Daily Semiannual

EU 017- Pinhole Paste D r y i ng - PP 03

Compliance Demonstration C o n d i t i o n ( s ) P o l l u t a n t /

Paramet er Perm it Lim i t

M e t h o d F r e que ncy Reporting Req u i remen ts

Method 9 As Required b y the Department Semi-annual D.1, D.5

, D

. 7, D.11, D.14 , D

. 1 5 Opacity 2 0 %

Baghouse I & M (Appendix K) O n g o i n g S e m i

- a n n u a l

D.3, D.7

, D

. 8, D.12, D.14 , D

. 1 5 P a rticul at e Matter E = 55*P 0.11 – 40 Method 5 As Required b y the Department. Semi-annual

Conditions

D

. 1.

D

. 2. CFA C shal l n o t c a us e or aut horiz e em issions t o b e d i sch a rged t o t h e at m o sphere fro m Pinhole Pas t e D r y i ng-PP03 t h at ex hi bit a n opa city of 2 0 % or gr eat er a v eraged over 6 c onse c u tiv e m i nutes (A R M
17. 8. 30 4(2)).

CFA C shal l n o t c a us e or aut horiz e em issions t o be discharged t o t h e at m o sphere from the Paste P l ant
Extru d er-PP01 a nd th e Past e Plan t Mix e r-PP02, t h at ex hi b i t an op ac i t y o f 40 % o r g r ea t e r av e r ag ed

over 6 c ons ec uti v e m i nutes (A RM 17 .8. 3 04(1)).

Perm it Nu m b er : OP2655- 01 9 Da te o f Decisio n : 0 5 / 2 1 / 03

E ffective Date: 06/21/03The part icu l at e em issions fro m process w e ig ht s h al l not exc e e d t h e va lue ca lcu l at ed by E = 55. 0*P 0. 1 1

- 40, w h ere E is the rate of em issio n s i n p o u nds per h our a nd P is t h e pro cess w e i ght ra te i n t ons per ho ur (A RM 17 .8. 3 10). D

. 3.

D.4.

D

. 5.

D.6.

D.7.

D

. 8.

D

. 9.

D.1 0

.

D

. 11.

D.12.

D

. 13.

D.14. Poly cy clic Organ i c Mat t er ( P OM) e m issions fro m th e pa ste pla n t s h al l be c o ntrol l e d by the operat i on

o f

a Dry Co ke Scru b b er (ARM 17 .8.30 2 ( i ) , ARM 17 .8 .342 , ARM 17 .8.7 10 , an d 40 CFR Part 63

, Subp art LL).

Complianc e Demonstratio n

A s require d b y the D e partm e nt, CFA C sh all perform a Met h o d 9 tes t in a c c o rda n ce w ith the M ont ana Source T e st P r otoc ol an d Pr oce dures Ma n u al. Ea ch obs ervat i o n p e rio d sha l l be a m i nim u m of 6

m i nutes, unles s any one re ading is great er t h an th e rel e v a nt opa ci ty lim i t (20 % or 40 %); th en th e observ a t i o n p e riod sha ll be a m i nim u m of 20 m i nutes or un til a vi ola t i on of t h e st an dard has bee n doc um ented, w h ich e v e r is a short e r per i o d of tim e (A RM 1 7 .8 .1 21 3).

Daily , CFAC m u st visu ally insp ect /surv e y the e xha ust s t ack of t h e Pas t e Pla n t Dry C oke Scrub b er for
evi d e n ce of a ny visible em issions indi cat ing a b norm al op erati on. T h e p e rson co nd uct i ng t h e s u rvey does no t hav e to be EPA M e tho d 9 c e rtifie d. Howe ver, t h e i n d i v i d u al shou ld be fam iliar wi th th e

proce dures of EPA Meth od 9, i n c l u d in g th e pro p er loc a ti on from w h ich t o o b serv e t h e visi ble

e m issions. If excess i ve em i ssions are i d e n tifi e d, CFAC shal l i n i tia te corr ect ive ac ti on proc edures
ide n tif ied i n t h e Star tu

p, Sh utd o w n , an d Malfu n c tio n P l an w i th in 1 h our (A RM 17

. 8 .1 21 3).

CFAC shal l o p erat e a nd m a int a in t h e ba g h o u se (EU01 7 ) in a c c o rda n c e with t h e Po ll uti o n Co ntro l

D e vice Insp ec tio n & Mai n te nan ce Pl an (A ppe nd ix K ) of th is p e rm it (A RM 1 7 .8 .1 2 13).

A s require d b y the D e partm e nt, CFA C sh all perform a Met h o d 5 tes t in a c c o rda n ce w ith the M ont ana Source T e st P r otoc ol an d Pr oce dures Ma n u al (A R M 1 7

. 8 .1 21 3).

The D r y Co ke Scrubb er sh al l be o p erat ed w h en eit h er E U 015 or EU 0 16 are o p era t i ng, in ac cord a n ce with the CFAC’s MACT I m ple m entato n Plan (Ap p e n d i x F) of th is p e rm it, to co ntr o l POM em issions
fro m the Paste Plan t. T h e pa ram e ter m onit o rin g sy stem m u st be opera ted, ca li brate d , an d m a intai n ed
for the Paste Plan t D r y Cok e Scrubb er (4 0 CFR 63 .8 48(f )).

Daily, CFAC mu st in spect th e Paste Plan t Dry C oke Scr u bber t o e n sur e that the c o nt rol device is

opera ti ng pro p erly . If a m onit o rin g dev i c e m easur es a n op erati n g par a m e ter ou tsid e of t h e lim its
estab lis hed i n CFAC ' s MACT Im ple m enta tio n Pla n (Ap p en di x F), t h e n CFAC sh all ini tia te correc t ive

act io n p r ocedu r es id ent i f ied i n t h e St artu p, Sh ut do wn , an d M a l f u n c t i on Pl an (Ap p end i x H o f th i s

perm it) w ithi n 1 ho ur (A RM 17 .8. 1 2 13).

Recordkeepi n g

Met h o d 9 tes t s shal l b e c o n duc te d i n a cco rd anc e wit h t h e Mont ana Source T e st Prot ocol a n d
Proced ures M a nu al. M e th o d 9 rep o rts m u st be m a intain ed on s ite an d m u st be su bm itte d t o t h e Dep a rt m e n t up on requ est (ARM 17 .8.106 ).

Met h o d 5 tes t reports m u st b e m a inta in ed on s ite an d m u st be s ubm itted t o the Depa rt m e nt in

accor d a n ce wi th the M ont ana Sourc e Tes t Protoc ol and Procedures M a nual (ARM 17.8.106).

CFA C shal l m a in tai n on-sit e records of t h e dai l y vis u a l e m issions o b se rved, th e oper a ti ng param e ters

m onitore d, an y excursi ons (exce e d a nc es) outs i d e of the specif i ed n o rm al opera ti ng param e ters, an d a n y

m a inten a nc e o r repair ini t i a t e d as a res u lt of no n-ty pi ca l op erati n g par a m e ters (A RM 1 7 .8 .1 21 2).

CFAC shal l m a in tai n on-sit e records of a ll insp ect io n a n d m a inte nan ce acti v i ties perf orm e d on th e baghouses in accor d a n ce wi th the Pol l ut ion c ontr o l De vi ce Ins p ec tion & Mai n te na nc e Plan (Appe ndix

K ) and s ubm it such rec o rds t o t h e D e partm e nt up on req u e st (A RM 17. 8.1 2 1 2 ).

Perm it Nu m b er : OP2655- 01 10 Da te o f Decisio n : 0 5 / 2 1 / 03

E ffective Date: 06/21/03Repo rting

D

. 15.

a.

b.

c.

d.

E. The an nua l c o m p lianc e c e rti f icat io n rep o rt requ ired by Secti o n V.B m u st c o ntai n a c e rtific ati o n
statem ent for t h e a b o v e ap pl i cab le re qu ire m ents. Th e se m i annua l c o m p li anc e m onit o rin g rep o rts s h al l
inc l ude a sum m a ry of (ARM 17.8.1212):

Th e resu l t s o f an y t e st co nd uct e d du ri ng t h e l a st repo rt ing peri od ;

For EU 015 & EU 016 o n ly , t h e num ber of opera ti ng para m e ter exce ed a n ces, in cl ud in g v i sib l e

em issions, occ u rring d u rin g t h e sem i annu al report i n g peri od (o ne ex cee dan ce per 24- hr peri od

– 40 CFR 63.848(i));

For EU 015 & EU 016 o n ly , a n y correc tiv e acti ons ta ke n as a res u lt of t h e dai l y vis u al survey s of
visi ble em issions a n d o p era t ing par a m e ters (Startup , Sh utd o w n an d M a lfun ct io n Pla n (A ppe nd ix H)); and

For EU017 only, a sum m a ry of a n y correc t ive ac tio ns t a k e n as a res u lt of th e i n sp ect i ons a n d

m a inten a nc e a s requ ired by t h e Po ll uti o n C ontr o l D e vic e Inspec ti on & Mai n te na nce Plan (A ppen d i x K )

.

EU 018
– PIT C H STOR AGE TA N K S - PP04

Compliance Demonstration C o n d i t i o n ( s ) P o l l u t a n t /

Paramet er Perm it Lim i t

M e t h o d F r e que ncy Reporting Req u i remen ts

E.1, E.2, E.3, E.4 Opacity 20% Method 9 As Required b y the Dept. Semiannual

Conditions

E.1.

E.2.

E.3

.

E.4.

F. CFA C shal l n o t c a us e or aut horiz e em issions t o be discharged t o t h e at m o sphere from the Pitc h Storage Ta nks -PP04 th at ex hib it an op ac it y of 20% or greater average d over 6 co nsec uti v e m i nutes (A RM 17 .8. 3 04(2)).

Complianc e Demonstratio n

A s require d b y the D e partm e nt, CFA C sh all perform a Met h o d 9 tes t in a c c o rda n ce w ith the M ont ana Source T e st P r otoc ol an d Pr oce dures Ma n u al (A R M 1 7

. 8 .1 21 3). E a c h obser vat i o n p e riod sha ll be a

m i nim u m of 6 m i nutes, u n le ss any o n e re a d in g is 20 % or g r eater, at wh i c h po in t t h e o b s ervati on perio d s h al l b e a m i nim u m of 20 m i nutes or un ti l a vi ol ati on of t h e s t and a rd has be en doc um ented,

w h ich e v e r is t h e sh orter peri od of t i m e

.

Recordkeepi n g

M e th od 9 t e sts sh all be co nd u c t e d in accord anc e wit h t h e Mont ana source T e st Prot ocol a n d
Proced ures M a nu al. M e th o d 9 rep o rts m u st be m a intain ed on s ite an d m u st be su bm itte d t o t h e Dep a rt m e n t up on requ est (ARM 17 .8.106 ).

Repo rting

The an nua l c o m p lianc e c e rti f icat io n rep o rt requ ired by Secti o n V.B m u st c o ntai n a c e rtific ati o n
statem ent for t h e a b ove appl i cable re quire m ent(s). The sem i annu al re porti n g sha l l p r ovi de a sum m a ry of th e resu lts of any so urce testi n g t h at w a s perform ed (A RM 1 7 .8 .1 2 12).

EU019 - THE R MINOL OIL HEATING SYSTEM - PP05

Compliance Demonstration C o n d i t i o n ( s ) P o l l u t a n t / P a r a m e t e r Perm it Lim i t

M e t h o d F r e que ncy Reporting Req u i remen ts

F.1, F.2

, F.3

, F.4 Opacity 40% Method 9 As Required b y the Department Semiannual

Perm it Nu m b er : OP2655- 01 11 Da te o f Decisio n : 0 5 / 2 1 / 03

E ffective Date: 06/21/03Conditions

F.1.

F.2.

F.3

.

F.4.

G. CFA C shal l n o t c a us e or aut horiz e em issions t o be discharged t o t h e at m o sphere from the Therm i nol
O il H eat in g S y stem -PP05 t h at ex hi bit a n opa city of 40% or gr eat er a v erag ed ov er 6 c onse c u tiv e

m i nutes (A R M 1 7 .8 .3 04(1) ).

Complianc e Demonstratio n

A s require d b y the D e partm e nt, CFA C sh all perform a Met h o d 9 tes t in a c c o rda n ce w ith the M ont ana Source T e st P r otoc ol an d Pr oce dures Ma n u al. Ea ch obs ervat i o n p e rio d sha l l be a m i nim u m of 6

m i nutes, un les s any o n e re ad ing is 40% or great er, a t w h i c h poi nt th e o b serva t i on per i od sha ll be a

m i nim u m of 20 m i nutes or u n ti l a vi ol ati o n of t h e st an dar d h a s b een d o c um ented, w h ich e ver is t h e shorter peri od of tim e (A RM 17 .8. 1 2 13).

Recordkeepi n g

M e th od 9 t e sts sh all be co nd u c t e d in accord anc e wit h t h e Mont ana Source T e st Prot ocol a n d
Proced ures M a nu al. M e th o d 9 rep o rts m u st be m a intain ed on s ite an d m u st be su bm itte d t o t h e Dep a rt m e n t up on requ est (ARM 17 .8.106 ).

Repo rting

The an nua l c o m p lianc e c e rti f icat io n rep o rt requ ired by Secti o n V.B m u st c o ntai n a c e rtific ati o n
statem ent for t h e a b o v e ap pl i cab le re qu ire m ents. Th e se m i annua l re po rting sha ll pro v id e a sum m a ry of any so urce testi n g t h at w a s perform ed (A RM 1 7 .8 .1 2 12).

EU020 - EU023 PRIMARY SCRUBBER SYSTEM ALUMINA T RANSFER E U ’S

EU020 - East Plant Dry Scrubber Alumina Transfer (North) - AR01 EU 022 - Wes t Plant D r y S crubber A l umina Transfer (North) - AR06
EU021 - East Plant Dry Scrubber Alumina Transfer (South) - A R 02 EU 023 - Wes t Plant D r y S crubber A l umina Transfer (South) - A R 07

Compliance Demonstration C o n d i t i o n s P o l l u t a n t /

Paramet er Perm it Lim i t

M e t h o d F r e que ncy Reporting Req u i remen ts

Method 9 As Required b y the Department Semiannual G.1, G.3

, G

. 4, G.6,
G.8 Opacity 2 0 %

Baghouse I & M (Appendix K) O n g o i n g S e m i a n n u a l

G.2, G.5

, G

. 7, G.8 Pa rticulate Matter E = 55*P 0.11 – 40 Method 5 As Required b y the Department Semiannual

Conditions

G.1.

G

. 2.

G.3. CFAC shal l not c a us e or aut horiz e em issions t o be discharged t o t h e at m o sphere from the East Pla n t
D r y Scrubber A l u m ina Tra n sfer (N orth)-AR01

, t h e E a st Plant D r y Scrub b er A l um ina Transfer (South)-A R0 2

, th e West Pla n t D r y Scrubb er A l um ina Transfer (N orth)

- A R 06, a n d t h e West Pl an t D r y Scrubb er A l u m ina Transfer (Sout h)-A R07, t h a t e x h i bi t an opa ci ty of 20% or gr eat e r avera g e d o v e r 6

cons ecu ti ve m i nu tes (A RM 17. 8. 30 4(2)).

The part icu l at e em issions fro m process w e ig ht s h al l not exc e e d t h e va lue ca lcu l at ed by E = 55. 0*P 0. 1 1

- 40, w h ere E is the rate of em issio n s i n p o u nds per h our a nd P is t h e pro cess w e i ght ra te i n t ons per hour (ARM 17.8.310).

Complianc e Demonstratio n

CFAC shal l operat e a nd m a int a in t h e ba ghouse i n a c c o rdan ce wi th th e Poll uti o n C o n t rol De vic e Inspec ti on & Mai n te na nce Plan (A p p en di x K ) (A rm 17.8.1 2 1 3 ).

Perm it Nu m b er : OP2655- 01 12 Da te o f Decisio n : 0 5 / 2 1 / 03

E ffective Date: 06/21/03G

. 4.

G

. 5.

G.6.

G.7.

G.8.

b.

H. A s require d b y the D e partm e nt, CFA C sh all perform a Met h o d 9 tes t in a c c o rda n ce w ith the M ont ana Source T e st P r otoc ol an d Pr oce dures Ma n u al. Ea ch obs ervat i o n p e rio d sha l l be a m i nim u m of 6

m i nutes, unles s any one re ading is great er t h an 20 %; th en the o b serv ati on peri od s h a l l be a m i nim u m of 20 m i nutes or un ti l a vi ol ati on of t h e s t and a rd has be en doc um ented, w h ich e v e r i s a sh orter per i od
of tim e (A RM 17 .8. 1 2 13).

A s require d b y the D e partm e nt, CFA C sh all perform a Met h o d 5 tes t in a c c o rda n ce w ith the M ont ana Source T e st P r otoc ol an d Pr oce dures Ma n u al (A R M 1 7

. 8 .1 21 3).

Recordkeepi n g

CFAC shal l m a in tai n on-sit e records of a ll insp ect io n a n d m a inte nan ce acti v i ties perf orm e d on th e baghouses in accor d a n ce wi th the Pol l ut ion C ontr o l De vice I n spe c ti on & Mai n te na nc e Plan (A ppen d i x K ) and subm it th e recor d s t o t h e D e partm e nt up on re qu est ( A RM 1 7 .8 .1 2 12).

Met h o d 5 an d Met h o d 9 tes t reports s h al l b e m a inta in ed on s ite an d sh all be s ubm itted t o the

D e partm e nt in acc orda nce w ith th e M o n t a n a So urce Pro t oc ol an d Proc edures Ma nu a l (A RM
17. 8. 10 6).

Repo rting

The annual co m p liance certi f ication report required by Section V.B m u st contain a certification statem ent for the above applicable requirem e nts. The sem i annual com p liance m oni toring reports shall include (ARM 17.8.12 12):

a. Th e resu l t s o f an y t e st co nd uct e d du ri ng t h e l a st repo rt ing peri od ; and

Any correct iv e ac ti ons tak e n as a resu lt of the i n spe c ti on s and m a inten a nce as re qu ired by th e Pollu ti on Co n t rol De vic e In spect io n & M a in ten a n ce Pl a n (Appe nd ix K).

EU0 2 4 - EU03 3 PRIMARY GAS COL LECTION SYSTEM EMITTING UNI TS

EU 024 - Pri m ar y Gas C o llect ion Syste m - West
Plant - Scrubber #1 - AR05 EU 029 - Pri m ar y Gas C o llect ion Syste m - East
Plant - Scrubber #6 - AR05

EU 025 - Pri m ar y Gas C o llect ion Syste m - West
Plant - Scrubber #2- AR05 EU 030 - Pri m ar y Gas C o llect ion Syste m - East
Plant - Scrubber #7 - AR05

EU 026 - Pri m ar y Gas C o llect ion Syste m - West
Plant - Scrubber #3 - AR05 EU 031 - Pri m ar y Gas C o llect ion Syste m - East
Plant - Scrubber #8 - AR05

EU 027 - Pri m ar y Gas C o llect ion Syste m - West
Plant - Scrubber #4 - AR05 EU 032 - Pri m ar y Gas C o llect ion Syste m - East
Plant - Scrubber #9 - AR05

EU 028 - Pri m ar y Gas C o llect ion Syste m - East
Plant - Scrubber #5 - AR05 EU 033 - Pri m ar y Gas C o llect ion Syste m - East
Plant - Scrubber # 10 - A R 05

Compliance Demonstration C o n d i t i o n ( s ) P o l l u t a n t /

Paramet er Perm it Lim i t

M e t h o d F r e que ncy Reporting Req u i remen ts

Method 9 A s R e q u i r e d b y t h e Depart ment H.1, H.4

, H

. 5, H.9, H.12 , H

. 13 Opacity 2 0 %

Visual Survey Daily Semi-annual

H.2, H.6

, H

. 8, H.10, H.12 , H

. 1 3 Total Fluorid e (TF) 1.3 kg / Mg (per Month) or
Table C of Appendix G Method 13B or
CFAC MACT

Im

plem entation Plan (Appendix F) Annual Quarterly

H.3, H.7

, H

. 8, H.11, H.12 , H

. 1 3 Poly cy cl ic Organic

Matter (POM) 1.8 kg / Mg (per Quarter) or Table C of Appendix G Method 315 or
CFAC MACT

Im

plem entation
Pla n (Appendix F) Annual Quarterly

Perm it Nu m b er : OP2655- 01 13 Da te o f Decisio n : 0 5 / 2 1 / 03

E ffective Date: 06/21/03Conditions

H

. 1.

H

. 2.

H.3.

H

. 4.

H.5.

H.6.

H.7. CFA C shal l n o t c a us e or aut horiz e em issions t o be discharged t o t h e at m o sphere from West Plant
Prim ary G a s Col l ec tio n Sy stem , Scrubb e r s 1 t h rou g h 4 (A R05), a nd t h e E a st Pla n t Prim ary G a s Col l ec tio n Sy stem , Scrubb e r s 5 t h rou g h 1 0 (A R05), t h at ex hib it an o p acity of 2 0 % or grea ter a v er age d

over 6 c ons ec uti v e m i nutes (A RM 17 .8. 3 04(2)).

CFA C shal l n o t c a us e or aut horiz e T o ta l F l uori d e (TF) em issions th at exce ed 1. 3 kg of TF per Mg of
alum inu m produc ed ( 2 .6 l b TF per t on of alum inu m produc ed) from any sin g le p o tl i n e; or if CFA C is

avera g i ng th e TF em issions fro m tw o or m o re p o t lin es, t h e em ission li m it for the averagi n g sche m e is prescrib ed in A ppen d i x G

, Tabl e C, of thi s perm it (A RM 1 7 .8 .3 31 an d A R M 17 .8. 3 42).

CFAC shal l not c a us e or aut horiz e Polycyclic Or gan i c Matt er (PO M ) em issions tha t ex cee d 1.8 k g of
PO M per M g of al um inu m prod uce d (3 .6 lb PO M per t o n of alum inu m produc ed) f r o m any sing l e pot li ne; or if CFA C is av er agi ng th e PO M em issions fro m tw o or m o re p o t lin es, t h e em ission li m it for
the av erag in g schem e is pres cribe d i n A p p e nd ix G

, Ta bl e C, of t h is pe rm it (A RM 17 .8. 3 3 1 a nd A R M
17. 8. 34 2).

Complianc e Demonstratio n

A s require d b y the D e partm e nt, CFA C sh all perform a Met h o d 9 tes t in a c c o rda n ce w ith the M ont ana Source T e st P r otoc ol an d Pr oce dures Ma n u al. Ea ch obs ervat i o n p e rio d sha l l be a m i nim u m of 6

m i nutes, unles s any one re ading is great er t h an 20 %; th en the o b serv ati on peri od s h a l l be a m i nim u m of 20 m i nutes or un ti l a vi ol ati on of t h e s t and a rd has be en doc um ented, w h ich e v e r i s a sh orter per i od
of tim e (A RM 17 .8. 1 2 13).

Daily , CFAC m u st visu ally insp ect /surv e y the p o tl in e ro of m onit o rs fo r evi d e n ce of any vis i b l e

em issions i n d i cati n g a b n o rm al o p era t i on u s ing th e proce dures ide n t i fie d i n A p pen d i x J. T h e perso n

con d u c ti ng t h e surv ey do es not ha ve to b e EPA Met h o d 9 cer tifie d. H o w e ver, n on-c e rtifie d
ind i v i d u als m u st be fam iliar with th e pr oc edures of EPA Met h o d 9, inc l ud in g t h e pro p er l o ca ti on to observ e t h e vi sible em ission s. U p o n i d e n t i fica tio n of ex cessiv e em issions, CFA C sh all in iti ate

correct iv e ac ti ons to m itiga t e th e visi ble e m issions (ARM 1 7 .8 .1 21 3).

CFAC shall an nually perform at least one em i ssion m e a s u r e m ent test (th r ee runs) for Total Fluoride (TF)
on each Pri m a r y Control Syste m (West Pla n t and East Pla n t). That is, a nnually , CFAC will perfor m one

em i ssion m e asurem ent test run for TF on t h ree of th e fou r dry alu m ina scrubbers that co m p rise the
Pri m ary Control Syste m o f t h e West Plant; and a nnually CFAC will pe rform one e m ission m easure m ent test run fo r TF on three of th e six dry alu m i n a scrubbe rs t h at co m p rise t h e Pri m ary Co ntrol Sy ste m of the
East Plant. Al so, CFAC will develop a testing schedule such that all dry alu m inu m scrubbers shall be
tested for TF a t least once (o ne test run) ev ery 2 yea r s. C F AC shall m a i n tain a 12-m o nth rolling average
of TF e m issio n s fro m the Pri m ary Control System s us ing the testing results of this require m e nt. All
valid test runs m u st be used. TF E m issions de term ined by this require ment are co m b ined with (m easu r ed) TF secondary emissions, and di vided by the total alu m inu m production, to dem onst r ate

co m p liance wi th TF em i ssio n li m i t s (40 CFR Part 63, Subpart LL and ARM 17.8.1213).

CFAC shall an nually perform at least one em i ssion m e a s u r e m ent test (th r ee runs) for Polycyclic Orga nic Matter (POM ) on each Pri m a r y Control Syste m (West Pla n t and East Pla n t). That is, a nnually , CFAC will perfor m one em i ssion m e asu r em ent test ru n for POM on three of the fo ur dry alu m ina scrubbers that

co m p rise the Pri m a r y Control Sy ste m o f the West Plant; and annually , CFAC will pe rform one e m i s sion

m e asure m ent t e st run fo r POM on three of the six dry alu m ina scrubbers that co m p rise the Pri m ary Control Syste m o f the East Plant. Al so, CFAC will develop a testing schedule such that all dry alu m inu m scrubbers shall be tested for POM at least on ce (one te st ru n) every 2 y e ars. CFAC shal l m a intain a 12

-

m onth rolling average of POM em i ssions fro m the Pri m ar y Control Syste m s using the testing results of this requirem e nt. All valid test runs m u st be used. POM Em i ssions deter m i n ed by this req u ire m ent are

co m b ined with m easured POM secondary em i ssions, and divided by the total alu m inu m p r oduction, to
dem onst r ate co m p liance wit h POM e m ission li m its (a s prescribed in 40 CFR Part 63, Subpart LL an d ARM 17.8.1213).

Perm it Nu m b er : OP2655- 01 14 Da te o f Decisio n : 0 5 / 2 1 / 03

E ffective Date: 06/21/03H.8.

H.9

.

H.10.

H.11.

H

. 12.

H

. 13.

a.

b.

c.

d.

e.

f.

g.

h. Daily, CFAC m u st inspect t h e dry alu m in a scrubbers of the Pri m ary Control Sy stem s to ensure that the control devices are operating properl y

. If a m onito ring device m e asures an operating param e ter outsi de
of the li m its e s tablished in CFAC ' s I m ple m enta tion Plan (Appendix F), t h en CFAC sha ll initiate
corrective acti on procedures as identified in the Star tup, Shutdown, and Malfunction Plan within 1 hour. If an operating para m e te r is e x ceeded six tim e s in any (se m iannual) rep o rting period, then any subsequent exceedance in that reporting period is a violation. For the p u rpose of dete rm ining the

nu m b e r of exc eedances, no m o re than one exceedance shall be attributed in any given 24-hour period (ARM 17.8.12 13).

Recordkeepi n g

M e th od 9 t e sts sh all be co nd u c t e d in accord anc e wit h t h e Mont ana Source T e st Prot ocol a n d
Proced ures M a nu al. M e th o d 9 tes t rep o rt s shal l b e m a inta ine d on s ite an d m u st be s ubm itted to th e Dep a rt m e n t up on requ est (ARM 17 .8.106 ).

CFAC shal l m a in tai n a rec o rd of the resu lt s fro m all va li d TF em ission m easure m ent runs p e rform ed

on the dry al um ina scrubber s of t h e Wes t and East Pri m ary Contr o l S y ste m s. CFAC m u st cal cul a te the r o ll ing m o nthly average of TF em issions ex ha uste d f r o m the dry a l u m ina scru bb ers. Th e TF

e m issions fro m the Pri m ary Co ntro l Sy ste m s will be c a l c ul ate d base d up on the tes t i ng re qu ired in III.H.6 (ARM 17.8.1212).

CFAC shal l m a in tai n a rec o rd of the resu lt s fro m all va li d POM em issi on m easure m e n t ru ns perform ed on the dry al um in a scru bbers of the West an d East Prim ary Con t rol Sy stem s. CFA C m u st calc u l a te the r o ll ing m onthl y aver age of POM e m issions exhaus te d from the dry al um ina scrubber s. The POM em issions from the Pri m ary Control Sy stem s will be c a lc ul a t ed bas e d up o n t h e test in g require d in III .H .7 (A RM 17 .8. 1 2 12).

CFA C shal l m a in tai n on-sit e records of t h e dai l y vis i b l e em issions o b s e rved , t h e op e r atin g param e ters

m onitore d, an y excursi ons (exce e d a nc es) outs i d e of the specif i ed n o rm al opera ti ng param e ters, an d

any m a inte na nce or rep a ir i n it iat e d as a re sult of n on- ty pic a l op erati n g p a ram e ters (A RM 1 7 .8 .1 2 12).

Repo rting

The an nua l c o m p lianc e c e rti f icat io n rep o rt requ ired by Secti o n V.B sha ll co nta i n a c e rtific ati o n
statem ent for t h e a b o v e ap pl i cab le re qu ire m ents. Th e se m i annua l re po rting sha ll pro v id e t h e num ber of op erat in g p a ram e ter exc e e da nces, i n cl u d in g visi bl e e m issions, o c c u rring d u rin g t h e (sem iannua l)

rep o r ti ng perio d

. The qu arterl y rep o r ti ng sh al l p r ov id e (aRM 1 7 .8 .1 212 ):

The res u lts of all va lid so urc e tes tin g tha t was perform e d d u rin g the q u arter;

The cal cul a te d TF a nd PO M em issions fro m the Prim ary Contro l Sy stem s (TF-Month l y an d POM-Quarterly ) ;

The com b ined TF em issions fro m the Pri m ary Contr o l Sy stem and th e sec o n d ary e m issions fro m the po tl ine roo f m onitors;

The com b ined PO M em issions fro m the Pr im ary Control Sy stem and t h e se co ndary em issions
fro m the p o tl i n e ro of m onitors;

The to ns of al u m inum produce d (TAP) for each p o tl in e per m onth a n d qu arter;

The lb of TF e m itted per TA P for eac h p o t lin e, a n d ea ch e m ission a v er agi ng gro up, p e r m onth;

The lb of POM em itted per TAP for eac h po tli ne, a nd e ach em ission avera g i ng gro up, per qu arte r;

A statem ent of com p liance (or noncom pliance) fo r each condition specified in III.H.1, III.H.2, and III.H.3, for each period; and

Perm it Nu m b er : OP2655- 01 15 Da te o f Decisio n : 0 5 / 2 1 / 03

E ffective Date: 06/21/03i.

I. A su m m a ry of any c o rrect ive ac ti ons take n as a result of the daily visual sur v eys of visible

em issions a n d op erati n g par a m e ters.

Requirem ents III.H.13(c)-(h) above are the sa m e as those specif i ed in III.I. 12(c)-(h). When CFAC

com p lies with the req u irem e n ts of c t h ro ug h h ab ov e, it i s also sat i sfy i ng the rep o rti ng re qu irem en ts of III.I.12(c)-(h).

EU034 - EU038 PO TLINE ROOF VENT EMITTIN G UNITS

EU034 - Po tline #1 Roo f Vent-West Pla n t - AR03 EU037 - Po tline #4 Roo f Vent- Ea st Pla n t - AR03
EU035 - Po tline #2 Roo f Vent-West Pla n t - AR03 EU038 - Po tline #5 Roo f Vent- Ea st Pla n t - AR03
EU036 - Po tline #3 Roo f Vent- Ea st Pla n t - AR03

Compliance Demonstration C o n d i t i o n ( s ) P o l l u t a n t /

Paramet er Perm it Lim i t

M e t h o d F r e que ncy Reporting Req u i remen ts

Method 9 (App endix J) Quarterly I.1, I.4

, I

. 5, I.8, I.9

, I

. 12 Opacity 1 0 %

Visua l Survey s (Appendix J) Daily Quarterly

I.2, I.6

, I

. 10,
I.12 Total Fluorid e (TF) 1.3 kg / M g (p er Month)

or

Tab l e C of A

p pen d ix G Method 13B & Method 14 (Appendix ) Three Test Runs per Month Quarterly

I.3, I.7

, I

. 11,
I.12 Poly cy cl ic Organic Matter (POM) 1.8 kg / M g (p er Quar ter

)

or

Tab l e C of A

p pen d ix G Method 315 & Method 14 (Appendix F) One Test Run p e r Month Quarterly

Conditions

I.1.

I.2.

I.3.

I.4.

I.5. CFA C shal l n o t c a us e or aut horiz e em issions t o b e d i sch a rged t o t h e at m o sphere fro m the Ro of V e nts of Potl in es 1 t h rou gh 5 (A R 03) t h a t e x h i bi t an o p ac ity of 10% or great er aver age d over 6 consec ut ive

m i nutes (AR M 17.8.332).

CFA C shal l n o t c a us e or aut horiz e T o ta l F l uori d e (TF) em issions th at exce ed 1. 3 kg of TF per Mg of
alum inu m produc ed ( 2 .6- l b TF per t on of alum inu m produc ed) from any sin g le p o tl i n e; or if CFA C is

avera g i ng th e TF em issions fro m tw o or m o re p o t lin es, t h e em ission li m it for the averagi n g sche m e is prescrib ed in A ppen d i x G

, Tabl e C (A R M 1 7 .8 .3 31 an d A R M 17 .8. 3 42).

CFAC shal l not c a us e or aut horiz e Polycyclic Or gan i c Matt er (PO M ) em issions tha t ex cee d 1.8 k g of
PO M per M g of al um inu m prod uce d (3 .6 -lb PO M p e r t on of al um inum produc ed) f r o m any sing l e pot li ne; or if CFA C is av er agi ng th e PO M em issions fro m tw o or m o re p o t lin es, t h e em ission li m it for
the av erag in g schem e is pres cribe d i n A p p e nd ix G

, Ta bl e C (A RM 17

. 8 .3 31 an d A R M 1 7 .8 .3 42).

Complianc e Demonstratio n

A quart erly M e th od 9 test, p e rform ed in a c c orda nc e w i t h the pro c e dure s descri be d i n A ppen d i x J of
this perm it, m u st be perform ed i n acc orda n ce w i t h t h e M ont an a Sour ce Test Pro t oc ol an d Proce dur es Manual . T h e Met h od 9 tes t shall be us ed t o determ ine c o m p liance wi t h t h e 10% opa c ity l i m it. Ea ch
observ a t i o n p e riod sha ll be a m i nim u m of 6 m i nutes, un less a n y on e r ead in g is grea t e r th an 10 %; t h en the obs erva ti o n p e rio d sh all be a m i nim u m of 2 0 m i nutes or u n t il a v i ol ati on of t h e s t and a rd has be en doc um ented, w h ich e v e r is a short e r per i o d of tim e (A RM 1 7 .8 .1 21 3).

Daily , CFAC m u st visu ally insp ect /surv e y the p o tl in e ro of m onit o rs fo r evi d e n ce of any vis i b l e

em issions i n d i cati n g a b n o rm al o p era t i on u s ing th e proce dures ide n t i fie d i n A p pen d i x J. T h e perso n

con d u c ti ng t h e surv ey do es not ha ve to b e EPA Met h o d 9 cer tifie d. H o w e ver, n on-c e rtifie d
ind i v i d u als m u st be fam iliar with th e pr oc edures of EPA Met h o d 9, inc l ud in g t h e pro p er l o ca ti on to observ e t h e vi sible em ission s. U p o n i d e n t i fica tio n of ex cessiv e em issions, CFA C sh all in iti ate

correct iv e ac ti ons to m itiga t e th e visi ble e m issions (ARM 1 7 .8 .1 21 3).

Perm it Nu m b er : OP2655- 01 16 Da te o f Decisio n : 0 5 / 2 1 / 03

E ffective Date: 06/21/03I.6.

I.7.

I.8.

I.9.

I.10.

I.11.

I.12.

a.

b.

c.

d.

e.

f. Monthly

, CFAC shall perfo rm at least three em i ssion m e asurem ent test runs fo r Total Fluoride (TF) on each potline (each Method 1 4 m a ni fold sy ste m ). Te st runs m u st be the sa m e duration as a pot cy cle, o r 48 hours. The m i ni m u m TF secondary e m i ssion testing schedule (three ti m e s per m onth) m u st adhere to the schedule defined in 40 CFR 63.847(b)(8); that is, at least one test ru n m u st be perform ed befo re the

15 th of each m onth, one test run m u st be pe rform e d a f te r t h e 15 th of each m onth, and th e re m a ining te st

run can occur at any ti m e du ring the m onth

, except that there m u st be at least 6 days be tween two o f t h e

runs. All valid test runs m u st be used when de term ining the secondary TF em i ssions. TF E m issions
determ ined by this require ment are co m b ined with the TF Pri m ary Cont rol Syste m e m issions (rolling

m onthl y average), and divided by the total alu m inu m p r oduction, to dem onstrate co m p l i ance with potline TF e m i ssion li m its (as presc r ibed in 40 CFR Pa rt 6 3 , Subpart LL and ARM 17.8.1213).

CFAC shal l perform at least one em ission m easur e m ent test ru n for P o ly cy clic Org a nic Ma tter (P OM)
each m onth on ea ch potl ine (each Me thod 14 m a nifol d s y ste m ). Test runs m u st be the sam e durati o n

as a pot cy cl e, or 4 8 h o u rs. A ll va li d t e st r uns m u st be u s ed w h e n det e rm ining the se con d ary PO M

e m issions. P O M e m issions det e rm ined b y this re qu ire m ent are c o m b in ed wi th m e asured POM

em issions fro m the Prim ary Co ntro l Sy ste m s, and d i v i d e d by th e t o ta l alum inum prod uct i o n , t o dem onstrate c o m p lian ce wi t h POM em issi on lim its (as prescri b ed in 40 CFR Part 63, Su bp art LL an d ARM 17.8.1213).

Recordkeepi n g

Met h o d 9 tes t s shal l b e c o n duc te d i n a cco rdanc e t o t h e Mon t a n a So ur ce Tes t Prot oc ol a n d Proce d ures Man u al . T h e test re ports sh all be m a inta i n ed o n si te a n d m u st be su b m itted t o the Departm e nt u p o n request (ARM 17.8.106).

CFA C shal l m a in tai n on-sit e records of t h e dai l y vis i b l e em issions o b s e rved fro m th e p o tl in e ro ofs, any exceedances above the 10% opacity requirem ent of III.I.1, and any m a intena nce or repair initiated

as a res u lt of e x cessi ve vis i b l e em issions fro m the pot li ne roof m onitors (A RM 1 7 .8 .1 21 2).

CFAC shal l m a in tai n a rec o rd of the resu lt s fro m all va li d TF em ission m easure m ent runs p e rform ed

on the Me th od 14 Ma nifo lds for al l p o t lin e s . Th e p o t l i n e seco nd ary TF em issions w i l l be ca lc ula t e d based upon the testin g required in III.I.6 ( A RM 17.8.1212).

CFAC shal l m a in tai n a rec o rd of the resu lt s fro m all va li d POM em issi on m easure m e n t ru ns perform ed on the Me th od 14 Man i fol d s for all p o tl in es. The po tli ne s e con d ary PO M em issions w i l l
be calculated based upon the testing required in III.I.7 ( A RM 17.8.1212).

Repo rting

The an nua l c o m p lianc e c e rti f icat io n rep o rt requ ired by Secti o n V.B m u st c o ntai n a c e rtific ati o n
statem ent for t h e a b ove appl i cable re quire m ents . Th e q u arterly re port i ng sha ll pro v i d e (A RM
17. 8. 12 12):

The res u lts of all va lid so urc e tes tin g tha t was perform e d d u rin g the q u arter;

The cal cul a te d sec o n d ary T F and PO M e m issions fro m the p o tl in e ro ofs (TF-Mont hly an d PO MQuarterly ) ;

The com b ined TF em issions fro m the Pri m ary Contr o l Sy stem and th e sec o n d ary e m issions fro m the po tl ine roo f m onitors;

The com b ined PO M em issions fro m the Pr im ary Control Sy stem and t h e se co ndary em issions
fro m the p o tl i n e ro of m onitors;

The to ns of al u m inum produce d (TAP) for each p o tl in e per m onth a n d qu arter;

The lb of TF e m itted per TA P for eac h p o t lin e, a n d ea ch e m ission a v er agi ng gro up, p e r m onth;

Perm it Nu m b er : OP2655- 01 17 Da te o f Decisio n : 0 5 / 2 1 / 03

E ffective Date: 06/21/03g.

h.

i.

j.

J

. The lb of POM em itted per TAP for eac h po tli ne, a nd e ach em ission avera g i ng gro up, per qu arte r;

A statem ent of com p liance (or noncom pliance) fo r each condition specified in III.I.1, III.I.2, and III.I.3, for each period;

The num ber of visi ble em ission ex cee da nc es oc currin g d u rin g t h e qu arter; a nd

A su m m a ry of any c o rrect ive ac ti ons take n as a result of the daily visual sur v eys of visible

e m issions.

Requirem ents III.I.12(c)-(h) above are the sa m e as those specif i ed in III.H.13(c)-(h). When CFAC

com p lies with the req u irem e n ts of c t h ro ug h h ab ov e, it i s also sat i sfy i ng the rep o rti ng re qu irem en ts of III.H.13(c)-(h).

EU0 3 9 - EU04 3 CASTING FURNA CE EMITTING UNITS

EU 039 - C a sting Furnac e #3 - C O 0 1 EU 042 - C a sting Furnac e #7 - C O 0 4

EU 040 - C a sting Furnac e #4 - C O 0 2 EU 043 - C a sting Furnac e #8 & # 9 - C O 05

EU 041 - C a sting Furnac e #6 - C O 0 3

Compliance Demonstration C o n d i t i o n ( s ) P o l l u t a n t /

Paramet er Perm it Lim i t

M e t h o d F r e que ncy Reporting Req u i remen ts

J. 1, J. 4, J. 5, J

. 6 Opa c i ty 40% Natural Gas or Liquid
Petroleum Gas Combustion O n g o i n g A n n u a l
Certifi c a tion

J.2, J.4

, J.5

, J

. 6 Particulate Matter E = 0.882xH -0.16 64 Natural Gas or Liquid
Petroleum Gas Combustion O n g o i n g A n n u a l
Certifi c a tion

J.3, J.4

, J.5

, J

. 6 Sulfur in Fuel 50 gr/100 cu f t Natural Gas or Liquid
Petroleum Gas Combustion O n g o i n g A n n u a l
Certifi c a tion

Conditions

J.1.

J.2.

J.3.

J.4.

J.5. CFA C shal l n o t c a us e or aut horiz e em issions t o be discharged t o t h e at m o sphere from Casting Fur n ace #3-CO 0 1 , C a s tin g Furn ace # 4 -CO 02, Cas i ng Fur n ac e # 6

- CO 03, C a sti n g Furna ce #7- CO 04, an d
Casti n g Furna ces # 8 & #9-C O 05, tha t e x h i bit an o p ac ity of 40 % or gre a ter a v era g e d over 6

cons ecu ti ve m i nu tes (A RM 17. 8. 30 4(1)).

CFA C shal l n o t c a us e or aut horiz e parti c u l at e m a tter ca used by com bustion, from fu el burning

equ i pm ent ins t all e d bef o re N ovem b er 23, 19 68 , t o b e d i scharg ed from any o u t d o o r s t ac k or chim ney in e x c e ss of th e va lu e c a lc ul ate d by E = 0

. 88 2xH -0. 1 664

, where H is the hea t i n p u t ca pac ity i n M M B tu per h our an d E is t h e m a xim u m allow a bl e par tic ula t e e m issions rate i n l b /M MBt u ( A RM 1 7 .8 .3 0 9 ).

CFA C shal l n o t burn any ga seous f u el co n t ai nin g s u lfur com pounds in exc e ss of 50 grains per 10 0
cub i c fe et of g a seo u s fue l , c a lc ula t ed as h y d roge n su lfid e at sta ndar d c o n d it io ns (A RM 1 7 .8 .3 22(5) ).

Complianc e Demonstratio n

The co m p liance m onito ring required by this perm it fo r the opacity (J.1), p a rticulate m a tt er fro m fuel

co m bustion (J.2), and sulfu r i n fuel requirem e nt s (J .3), fo r their natural gas boilers sha ll consist of burning only natural gas or li quid petroleum gas. This does not preclude the Depart m e nt fro m init iating
an enforce m en t action if a Reference Metho d test indicates one of the li mits is being violated (ARM 17.8.1213).

Recordkeepi n g

Recor d k eep in g is no t req u ir ed t o m onitor com p liance w ith A R M 17. 8. 30 4, A R M 1 7

. 8 .3 09 , a nd A R M
17. 8. 32 2 (A RM 1 7 .8 .1 21 2).

Perm it Nu m b er : OP2655- 01 18 Da te o f Decisio n : 0 5 / 2 1 / 03

E ffective Date: 06/21/03Repo rting

J.6.

K. The an nua l c o m p lianc e c e rti f icat io n rep o rt requ ired by Secti o n V.B sha ll co nta i n a c e rtific ati o n
statem ent for t h e a b o v e ap pl i cab le re qu ire m ents, an d t h a t o n ly n a tur a l gas or li qu id p e trol eum gases

w e re com busted (A RM 17 .8 .12 12).

EU044 - EU048 CASTING PIT EMITT I NG UNITS

EU 044 - C a sting Pit #3 - C O 06 EU 047 - C a sting Pit #8 & #9 - C O 0 6

EU 045 - C a sting Pit #4 - C O 06 EU 048 – D r o ss Handling - C O 07

EU 046 - C a sting Pit #6 & #7 - C O 0 6

Compliance Demonstration C o n d i t i o n ( s ) P o l l u t a n t /

Paramet er Perm it Lim i t

M e t h o d F r e que ncy Reporting Req u i remen ts

K.1, K.3

, K

. 5, K.7 Opacity 40% Method 9 A s R e q u i r e d b y t h e Department Semiannual

K. 2, K. 4, K

. 6, K. 7 Partic ulate Matter E = 4.10 x P 0.67 Method 5 As Required b y the Department Annual Cer tification

Conditions

K

. 1.

K.2.

K

. 3.

K.4.

K.5.

K.6.

K. 7. CFA C shal l n o t c a us e or aut horiz e em issions t o b e d i sch a rged t o t h e at m o sphere fro m Casting Pits #3

, #4, # 6

, #7, # 8

, #9 , (CO 06), a nd D r oss H a n d li ng-CO 0 7

, t h at ex hi bit a n opa city of 4 0 % or gr eat er

avera g e d o v er 6 c ons ecu ti ve m i nutes (A R M 1 7 .8 .3 04(1) ).

The part iculat e em issions fro m process w e ight s h al l not exc e e d t h e va lue ca lculat ed by E = 4.10 x P

0. 6 7 , w h ere E i s the rate of e m issions in p o u n d s per ho ur and P is t h e pr ocess w e ig ht r a te in to ns p e r hour (ARM 17.8.310).

Complianc e Demonstratio n

A s require d b y the D e partm e nt, CFA C sh all perform a Met h o d 9 tes t in a c c o rda n ce w ith the M ont ana Source T e st P r otoc ol an d Pr oce dures Ma n u al. T h e Met h o d 9 tes t sha l l be use d to m oni tor com p liance
with the 4 0 % opa city lim it. Beca use all ca stin g a c ti vi ties are c o n d u c te d in do ors, M e t h o d 9 tes tin g will only fo cus on the vis i b l e em issio n s e x it in g fro m the o p e n in gs of th e c a stin g bu il din g s (ARM

17. 8. 12 13).

CFAC is required to m a intain nor m al operat ions to m onitor com p liance with section III.K.2 (ARM

17. 8. 12 13).

Recordkeepi n g

All tes t rep o rt s shal l b e m a inta ine d on s ite an d su bm itted t o t h e De par t m e nt i n a ccor d an ce wi th th e Mon t a n a So ur ce Tes t Prot oc ol a n d Proce d ures Ma nu al ( A RM 1 7 .8 .1 0 6 ).

CFAC is not r e quir ed to m a intain r e cor d s of no rm al oper ation indicating co m p liance with section III.K

. 2 (ARM 17 .8.1212 ).

Repo rting

The annu al com p l i a nc e c e r ti fi cat i on repo rt required b y Section V.B sh a l l cont ai n a cer t i f

i c a t i on s t a t em ent fo r the abov e app lic able requ ire m e n t s

. The se m i a nnu al com p l i a nc e m o n ito ring repo rt s sh all cont ain a

su

mm a r y o f the re sul t s o f an y te st s that we re reque st ed b y th e Dep a rt

m e n t

. Te st repo rt s sh all be su b m i tte d

to th e De pa rt

me nt i n a cco rd anc e wi th the Mont an a S o ur ce T e s t Pr ot oc ol and Procedu r es M a nual.

Perm it Nu m b er : OP2655- 01 19 Da te o f Decisio n : 0 5 / 2 1 / 03

E ffective Date: 06/21/03L. EU049 - EU050 ALUMINUM SAW EMITTING UNITS

EU 049 – She et Ingot Saw - C O 08 EU 050
– T- I n got Saw - C O 09

Compliance Demonstration C o n d i t i o n ( s ) P o l l u t a n t / P a r a m e t e r Perm i t Lim i t

M e t h o d F r e que ncy Reporting Req u i remen ts

L.1, L.3, L.5, L.6 Opacity 20% Method 9 A s R e q u i r e d b y t h e Depart ment. Semiannual

L.2, L.4, L.5, L.6 Par ticulate Matter E = 4.10*P 0.67 Method 5 A s R e q u i r e d b y t h e Depart ment. Semiannual

Conditions

L.1.

L.2.

L.3.

L.4.

L.5.

L.6.

a.

b.

M. CFA C shal l n o t c a us e or aut horiz e em issions fro m the S h ee t In got Sa w-CO08 th at exh i b it an op a c ity
of 20 % or gre a ter a v era g e d over 6 c ons ec uti v e m i nut es (A RM 17 .8. 3 04(2)). A s a r e sult of ve nti n g ind oors, EU 05 0 (th e T-In got Saw ) is no t c u rrent ly sub j e c t t o t h is req u i r em ent.

The part iculat e em issions fro m process w e ight s h al l not exc e e d t h e va lue ca lculat ed by E = 4.10 x P 0. 6 7 , w h er e E is th e rat e of e m issions in p o u n d s per ho ur and P is t h e pr ocess w e ig ht r a te in to ns p e r hour (ARM 17.8.310).

Complianc e Demonstratio n

A s require d b y the D e partm e nt, CFA C sh all perform a Met h o d 9 tes t in a c c o rda n ce w ith the M ont ana Source T e st P r otoc ol an d Pr oce dures Ma n u al. Ea ch obs ervat i o n p e rio d sha l l be a m i nim u m of 6

m i nutes, un les s any o n e re ad ing is 20% or great er, a t w h i c h poi nt th e o b serva t i on per i od sha ll be a

m i nim u m of 20 m i nutes or u n ti l a vi ol ati o n of t h e st an dar d h a s b een d o c um ented, w h ich e ver is t h e shorter peri od of tim e (A RM 17 .8. 1 2 13).

A s require d b y the D e partm e nt, CFA C sh all test th e a b ove sources for part iculat e m a tter in ac cordance
with Reference Method 5 to monitor com p liance with the lim itation contained in Section III.L.2. The

source tes t m u st be perform e d as s p ec ifie d in th e M ont an a Sourc e Tes t i ng Pro t oc ol an d Proce dures Manual (ARM 17.8.106).

Recordkeepi n g

All tes t rep o rt s shal l b e m a inta ine d on s ite an d su bm itted t o t h e De par t m e nt i n a ccor d an ce wi th th e Mon t a n a So ur ce Tes t Prot oc ol a n d Proce d ures Ma nu al ( A RM 1 7 .8 .1 0 6 ).

Repo rting

The annual co m p liance certi f ication report required by Section V.B m u st contain a certification

statem ent fo r t h e above appli cable requirements. The semiannual reporting shall provide a su mm ary of (ARM 17.8.12 12):

The res u lts of any Me th od 9 testi n g co nd uc ted dur in g t h e perio d ; an d

The res u lts of any Me th od 5 testi n g perfor m ed duri ng th e per i o d

.

EU 051 – SA N D BLA STING A C T IV ITIES - C R 01

Compliance Demonstration C o n d i t i o n ( s ) P o l l u t a n t / P a r a m e t e r Perm it Lim i t

M e t h o d F r e que ncy Reporting Req u i remen ts

M. 1, M. 4, M. 7,

M. 9 Opacity 20% Method 9 As Required b y the Dep a rtment Semiannual

M. 2, M. 5, M. 7,

M. 9 Opacit y R e a s onabl e P r ecaut i ons Visual Survey s Weekly Semiannual

M. 3, M. 6, M. 7,

M. 8, M. 9 Particulate Matter E = 4.10*P 0.67 N o r m a l Operations Annual
Certifi c a tion Annual
Certifi c a tion

Perm it Nu m b er : OP2655- 01 20 Da te o f Decisio n : 0 5 / 2 1 / 03

E ffective Date: 06/21/03Conditions

M.1.

M.2.

M.3.

M.4.

M.5.

M.6.

M.7.

M.8.

M.9.

a.

b.

c. CFA C shal l n o t c a us e or aut horiz e em issions t o b e d i sch a rged t o t h e at m o sphere fro m Sandblas ti n g A c tiv iti es-CR 01 tha t e x h i b i t an op aci ty of 20% or gr eat e r avera g e d o v e r 6 c ons ecu ti ve m i nutes (A RM
17. 8. 30 4(2)).

CFA C shal l n o t c a us e or aut horiz e t h e pro duc ti on, ha nd l i ng , tra n sp orta tio n, or st orag e of a n y m a terial
unl ess reas ona ble prec au tio n s to co ntro l e m issions of pa rticulat e m a tter are ta ke n. S u ch em ission of
airbor ne part i c ul ate m a tter f r o m any stati o nary sourc e sh all no t e x h i b it an opa ci ty of 20% or gr eat e r

avera g e d o v er 6 c ons ecu ti ve m i nutes, u n le ss oth e rw ise s p ec ified by ru l e or i n this per m it (A RM
17. 8. 30 8(1)).

CFA C shal l n o t c a us e or aut horiz e parti c u l ate m a tter to b e dis c h a rge d f r o m any opera tio n, proc ess, or acti v i t y into the atm o sphere i n e x cess of t h e va lu e c a lc ul ate d by E = 4

. 10 x P 0. 67 , whe r e E is the

em ission rat e i n p o u nds per ho ur an d P is t h e process w e igh t rat e i n to ns per ho ur (A RM 1 7

. 8 .3 10)

.

Complianc e Demonstratio n

A s require d b y the D e partm e nt, CFA C sh all perform a Met h o d 9 tes t in a c c o rda n ce w ith the M ont ana Source T e st P r otoc ol an d Pr oce dures Ma n u al. Ea ch obs ervat i o n p e rio d sha l l be a m i nim u m of 6

m i nutes, un les s any o n e re ad ing is 20% or great er, a t w h i c h poi nt th e o b serva t i on per i od sha ll be a

m i nim u m of 20 m i nutes or u n ti l a vi ol ati o n of t h e st an dar d h a s b een d o c um ented, w h ich e ver is t h e shorter peri od of tim e (A RM 17 .8. 1 2 13).

For the p u rpos e of c o m p lian ce c e rtific at io n, CF AC s h al l conduct a we ekly sur v ey of the visible

em issions fro m sand b l ast i n g ac ti vit i es. C o n duc ti ng a v i sual s u rvey do es no t re lie ve CFA C fro m the
lia bil ity of a v i ol ati o n d o cu m e nted w i th a Met h o d 9 t e st . Th e p e rson con d u c ti ng t h e vis u a l surv e y does no t hav e to be an EPA Met h o d 9 cert i fied o b server; howe v er, the ind i v i d u al m u st be fam iliar

w ith the pro c e dures of EPA Met h o d 9

, i n c l ud in g t h e pro p er l o ca ti on fr o m w h ich to o b serve vis i b l e

e m issions. If excess i ve fugi tive em issions are i d e n tif i e d

, CFAC shal l i n it iat e efforts to m i ni m i ze o r
curta il the em issions (A RM 17. 8. 12 13).

CFAC is required to m a intain nor m al operat ions to m onitor com p liance with section III.M.3 (ARM
17. 8. 12 12)

Recordkeepi n g

All tes t rep o rt s shal l b e m a inta ine d on s ite an d su bm itted t o t h e De par t m e nt i n a ccor d an ce wi th th e Mon t a n a So ur ce Tes t Prot oc ol a n d Proce d ures Ma nu al ( A RM 1 7 .8 .1 0 6 ). T h e lo g of w eekly visu al

survey resu lts shall b e m a intain ed on sit e a nd s ubm itted t o t h e De partm e nt up on req u e st.

CFAC is not r e qu ired to per f or m reco rdkeeping f o r III.M.6.

Repo rting

The annual co m p liance certi f ication report required by Section V.B shal l contain a certification statem ent for the above applicable requirem e nts. The sem i annual reporting shall provide a su mmary of (ARM 17.8.1212):

An y M e th od 9 t e st s t h at were p e rfo rm ed ;

A ll v i sua l sur v ey s th at w e re co nd uct e d ; a n d

Any insta n c e s of e x cessi ve e m issions a n d any c o rrect ive ac ti ons take n as a result of exc e ssive

e m issions.

Perm it Nu m b er : OP2655- 01 21 Da te o f Decisio n : 0 5 / 2 1 / 03

E ffective Date: 06/21/03N. EU052 – LECTROMELT FURNACE EMITTING UNIT - CR03

Compliance Demonstration C o n d i t i o n ( s ) P o l l u t a n t /

Paramet er Perm it Lim i t

M e t h o d F r e que ncy Reporting Req u i remen ts

Method 9 As Required b y the Dept. Semi-annual N. 1, N. 3, N. 4, N. 6, N. 8 O p a c i t y 2 0 %
Baghouse I & M (Appendix K) O n g o i n g S e m i

- a n n u a l

N. 2, N. 4, N. 5, N. 7, N. 8 P a r t i c u l a t e M a t t e r E = 4.10*P 0.67 Method 5 As Required b y the Dept. Semi-annual

Conditions

N

. 1.

N

. 2.

N

. 3.

N

. 4

.

N

. 5.

N.6.

N.7.

N

. 8. CFA C shal l n o t c a us e or aut horiz e em issions t o be di scharg ed to th e atmo sphere from the Lectromelt
Furnace-C R 03 t h at exhi bi t an opa ci ty of 20% or gr eat e r avera g e d over 6 c ons ecuti ve m i nutes (A RM
17. 8. 30 4(2)).

The part icu l at e em issions fro m process w e ig ht s h al l not exc e e d t h e va lue ca lculat ed by E = 4.10*P 0. 6 7

,

w h ere E is t h e rate of em issions in po un ds per h our an d P is th e pr oces s w e igh t ra te i n t ons per ho u r (A RM 17 .8. 3 10).

Complianc e Demonstratio n

A s require d b y the D e partm e nt, CFA C sh all perform a Met h o d 9 tes t in a c c o rda n ce w ith the M ont ana Source T e st P r otoc ol an d Pr oce dures Ma n u al. T h e Met h o d 9 tes t sha l l be use d to de term ine

com p liance with th e 2 0 % o p ac ity lim it (ARM 1 7 .8 .1 2 13).

CFAC shall o p erate and m a i n tain the baghouse in accordance with the Pollution Control Device Inspection & Maintenance Plan (Appendix K) (ARM 17.8.1213).

A s require d b y the D e partm e nt, CFA C sh all perform a Met h o d 5 tes t in a c c o rda n ce w ith the M ont ana Source T e st P r otoc ol an d Pr oce dures Ma n u al (A R M 1 7

. 8 .1 21 3).

Recordkeepi n g

CFAC shal l m a in tai n on-sit e records of a ll insp ect io n a n d m a inte nan ce acti v i ties perf orm e d on th e baghouses in accor d a n ce wi th the Pol l ut ion C ont r o l De vice I n spe c ti on and Ma intena nce Pl an (A ppen d i x K ) and subm it su ch rec o rds to t h e D e partm e nt u p o n req u es t (A RM 1 7 .8 .1 21 2).

Met h o d 5 an d Met h o d 9 tes t reports s h al l b e m a inta in ed on s ite an d sh all be s ubm itted t o the Departm e nt, upon request

, i n ac cordance with th e M ont ana S ource Proto c o l a nd Pro ced ures M a n u a l (A RM 17 .8. 1 06).

Repo rting

The an nua l c o m p lianc e c e rti f icat io n rep o rt requ ired by Secti o n V.B m u st c o ntai n a c e rtific ati o n
statem ent for t h e a b o v e ap pl i cab le re qu ire m ents. Th e se m i annua l c o m p li anc e m onit o rin g rep o rts s h al l
inc l ude a sum m a ry of (ARM 17.8.1212):

a. The res u lts of any tes t c o n d u c te d d u rin g th e rep o rti ng pe riod; a nd

b. Any correct iv e ac ti ons tak e n as a resu lt of the i n spe c ti on s and m a inten a nce as re qu ired by th e Pollu ti on Co n t rol De vic e In spect io n & M a in ten a n ce Pl a n (Appe nd ix K).

Perm it Nu m b er : OP2655- 01 22 Da te o f Decisio n : 0 5 / 2 1 / 03

E ffective Date: 06/21/03O. EU053 – RO D MILL/MATERIAL ST ORAGE EMITTING UNI T - CR0 4

Compliance Demonstration C o n d i t i o n ( s ) P o l l u t a n t /

Paramet er Perm it Lim i t

M e t h o d F r e que ncy Reporting Req u i remen ts

Method 9 As Required b y the Department. Semi-annual O.1, O.3

, O

. 4,
O. 5, O. 6, O

. 7 Opacity 2 0 %

Baghouse I & M (Appendix K) O n g o i n g S e m i

- a n n u a l

O.2, O.3

, O

. 4,
O. 5, O. 6, O. 7 Particulate Matter E = 55*P 0.11 - 40 Method 5 As Required b y the Department Semi-annual

Conditions

O

. 1.

O

. 2.



### O.3.

O

. 4.

O.5.

O.6.

O.7.

P. CFA C shal l n o t c a us e or aut horiz e em issions t o be discharged t o t h e at m o sphere from the Rod
Mil l/M ateri a l Storage Uni t -CR04 t h at e x hibi t a n o p a c ity of 2 0 % or gre a ter a v era g e d over 6

cons ecu ti ve m i nu tes (A RM 17. 8. 30 4(2)).

The part icu l at e em issions fro m process w e ig ht s h al l not exc e e d t h e va lue ca lcu l at ed by E = 55. 0 x P 0. 1 1 - 4 0 , w h er e E is th e rat e of em issions i n p o u nds per ho ur an d P is t h e process w e igh t rat e i n to ns per h our (A R M 1 7 .8 .3 10).

Complianc e Demonstratio n



### CFAC shall operate and maintain the baghou se in accordance with the Polluti on Control Devi ce Inspection & Maintenance Plan (Append ix K) (Arm 17.8.1 213).

A s require d b y the D e partm e nt, CFA C sh all perform M e th od 5 an d M e th od 9 tests i n ac cord an ce w ith
the Mo nt ana Source Test Pro t oc ol an d Proc edures Ma nu a l (A RM 1 7

. 8

. 1 2 13).

Recordkeepi n g

CFAC shal l m a in tai n on-sit e records of a ll insp ect io n a n d m a inte nan ce acti v i ties perf orm e d on th e baghouses in accor d a n ce wi th the Pol l ut ion C ontr o l De vice I n spe c ti on & Mai n te na nc e Plan (A ppen d i x K ) and subm it su ch rec o rds to t h e D e partm e nt u p o n req u es t (A RM 1 7 .8 .1 21 2).

Met h o d 5 an d Met h o d 9 tes t reports m u st b e m a inta in ed on s ite an d m u st be s ubm itted t o the

D e partm e nt in acc orda nce w ith th e M o n t a n a So urce Tes tin g Prot oc ol and Proce dure s Man u a l (A RM
17. 8. 10 6).

Repo rting

The annual co m p liance certi f ication report required by Section V.B shal l contain a certification statem ent for the above applicable requirem e nts. The sem i annual com p liance m oni toring reports shall include (ARM 17.8.12 12):

a. The res u lts of any Me th od 5 or Me th od 9 t e sts c o n duc te d d u rin g the la st rep o rti ng pe riod; a nd

b. A su m m a ry of any c o rrect iv e ac ti ons tak e n as a resu lt of the i n spe c ti on s and m a inten a nce as require d by th e Pol l ut io n C o ntrol D e v i ce I n spe c ti on & Mai n te na nce Plan (A p p en di x K )

.

EU 054
– EU 0 62 N A T U R A L GA S BOILER EMITTI NG UNITS

EU 054 - C h ange House Bo iler # 1 - MP0 1 EU 059 - Past e Pl ant Boi l er #1 - MP11

EU 055 - C h ange House Bo iler # 2 - MP0 2 EU 060 - Past e Pl ant Boi l er #2 - MP12

EU 056 - Lab Boi l er #1 - M P 07 EU 061 - War e house Bo il er #1 - MP16

EU 057 - Mac h ine Shop Bo iler # 1 - MP0 8 EU 062 - War e house Bo il er #2 - MP17 EU058 - Machine Shop Boiler #2 - MP09

Perm it Nu m b er : OP2655- 01 23 Da te o f Decisio n : 0 5 / 2 1 / 03

E ffective Date: 06/21/03Compliance Demonstration C o n d i t i o n ( s ) P o l l u t a n t /

Paramet er Perm it Lim i t

M e t h o d F r e que ncy Reporting Req u i remen ts

P.1, P.4

, P.5

, P.6 Opacity 20% Natural Gas Co mbustion O n g o i n g A n n u a l Cer t i f

i c a t i o n P.2, P.4

, P.5

, P.6 Par ticulate Matter E = 1.026*H -0.23 3 Natural Gas Co mbustion O n g o i n g A n n u a l Cer t i f

i c a t i o n P.3, P.4

, P.5

, P.6 Sulfur in Fuel 50 gr/100 cu f t Natural Gas Co mbustion O n g o i n g A n n u a l Cer t i f

i c a t i o n

Conditions

P.1.

P.2.

P.3.

P

. 4

.

P.5.

P.6.

Q. CFA C shal l n o t c a us e or aut horiz e em issions t o be discharged t o t h e at m o sphere from the Change

H ouse B o i l ers #1-MP 01, Ch ang e H o use B o il er # 2 -MP0 2, t h e Lab Bo i l er # 1 -MP0 7, Mac h in e Sh op Boi l er #1-MP 08, Ma chi n e Shop B o il er #2-MP09, Paste Plant Boiler #1-MP11, Past e Plant B o i l er #2- MP12, Wareh ouse Bo iler #1 -MP16, an d Wareho use B o il er # 2 -MP1 7, t h a t e x h i bi t an opa ci ty of 20%

or grea ter a v er age d o v er 6 c onse c ut iv e m i nut es (A RM 1 7 .8 .3 04(2)).

CFA C shal l n o t c a us e or aut horiz e parti c u l at e m a tter ca used by com bustion, from fu el burning

equ i pm ent ins t all e d after N o vem b er 23, 19 68, to be d i sch a rged fro m an y out do or sta c k or chim ney in

excess of t h e val u e cal cu lat e d by E = 1. 0 26 x H -0. 2 33 , where H is the heat inpu t ca pa city i n M M Bt u p e r ho ur an d E is t h e m a xim u m all o w a bl e part icu l at e em issions ra te in lb / MMBt u (A R M 1 7 .8 .3 09).

CFA C shal l n o t burn any ga seous f u el co n t ai nin g s u lfur com pounds in exc e ss of 50 grains per 10 0
cub i c fe et of g a seo u s fue l , c a lc ula t ed as h y d roge n su lfid e at sta ndar d c o n d it io ns (A RM 1 7 .8 .3 22(5) ).

Complianc e Demonstratio n

M o n i t o r i n g compliance for Section III.P.1, III.P.2, and I II.P.3 m a y be satisfied fo r their natural gas
boi lers by bur nin g on ly na tu ral g a s. T h is does no t precl ude th e De par t m e nt from initiat i n g a n enforcem ent a c ti on if a Refe rence Me th od test in dic a tes one of t h e lim its is be in g v i ola t ed (ARM

17. 8. 12 13).

Recordkeepi n g

Recor d k eep in g is no t req u ir ed t o m onitor com p liance w ith A R M 17. 8. 30 4, A R M 1 7

. 8 .3 09 , a nd A R M
17. 8. 32 2 (A RM 1 7 .8 .1 21 2).

Repo rting

The an nua l c o m p lianc e c e rti f icat io n rep o rt requ ired by Secti o n V.B m u st c o ntai n a c e rtific ati o n
statem ent for t h e a b ove appl i cable re quire m ents, an d t h a t o n ly n a tur a l gas was c o m b uste d (ARM
17. 8. 12 12).

EU0 6 3
– TRUCK, EQUI PMENT, AND HAUL RO AD EMISSI ONS – MP0 5

Compliance Demonstration C o n d i t i o n ( s ) P o l l u t a n t /

Paramet er Perm it Lim i t

M e t h o d F r e que ncy Reporting Req u i remen ts

Q.1, Q.3

, Q

. 4, Q. 5 Opacity 20% Method 9 A s R e q u i r e d b y t h e Depart ment Semiannual

Method 9 A s R e q u i r e d b y t h e Depart ment Semiannual Q.2, Q.3

, Q

. 4, Q. 5 Opacit y R e a s onabl e P r ecaut i ons

Mainten a nce , Trea tm ent, and S p eed As Needed Semiannual

Conditions

Q

. 1. CFA C shal l n o t c a us e or aut horiz e t h e pro duc ti on, ha nd l i ng , tra n sp orta tio n, or st orag e of a n y m a terial,
unl ess reas ona ble prec au tio n s to co ntro l e m issions of pa rticulat e m a tter are ta ke n. S u ch em issions of
airbor ne part i c ul ate m a tter f r o m any stati o nary sourc e sh all no t e x h i b it an opa ci ty of 20% or gr eat e r

Perm it Nu m b er : OP2655- 01 24 Da te o f Decisio n : 0 5 / 2 1 / 03

E ffective Date: 06/21/03avera g e d o v er 6 c ons ecu ti ve m i nutes, u n le ss oth e rw ise s p ec ified by ru l e or i n this per m it (A RM
17. 8. 30 8(1)). Q

. 2.

Q

. 3.

Q.4.

Q

. 5.

R. CFA C shal l m a in tai n a ll por t i ons of t h e ha ul ro ads, ac ce ss roads, par k i ng lo ts, a n d ge neral pl an t are a

as ne cessary t o m a intain c o m p lianc e w i t h A R M 1 7

. 8 .3 0 8 . N o n-pa ve d roads an d pla n t ar eas su bj e c t t o vehicl e a n d equipm ent traffi c will be trea t e d wi t h wa ter and/or chem ical dust suppre ssants as

necess a ry to m a intai n c o m p li anc e wit h ARM 17.8.308.

Complianc e Demonstratio n

A s require d b y the D e partm e nt, CFA C sh all perform a Met h o d 9 tes t in a c c o rda n ce w ith the M ont ana Source T e st P r otoc ol an d Pr oce dures Ma n u al. Ea ch obs ervat i o n p e rio d sha l l be a m i nim u m of 6

m i nutes, un les s any o n e re ad ing is 20% or great er, a t w h i c h poi nt th e o b serva t i on per i od sha ll be a

m i nim u m of 20 m i nutes or u n ti l a vi ol ati o n of t h e st an dar d h a s b een d o c um ented, w h ich e ver is t h e shorter peri od of tim e (A RM 17 .8. 1 2 13).

Recordkeepi n g

All tes t rep o rt s shal l b e m a inta ine d on s ite an d su bm itted t o t h e De par t m e nt i n a ccor d an ce wi th th e Mon t a n a So ur ce Tes t Prot oc ol a n d Proce d ures Ma nu al ( A RM 1 7 .8 .1 0 6 ).

Repo rting

The an nua l c o m p lianc e c e rti f icat io n rep o rt requ ired by Secti o n V.B m u st c o ntai n a c e rtific ati o n sta ting
whether CFAC is i n com p liance wit h t h e above appl ica b le r e q u irem e n ts. The sem i ann u a l c o m p liance
report i n g sh all inc l u d e th e re sults of a n y M e th od 9 test in g c o n duc te d d u rin g t h e peri od (A RM
17. 8. 12 12).

EU064 – GA SOLINE STORAGE (TANK) EMITTING UNIT – MP04

Compliance Demonstration C o n d i t i o n ( s ) P o l l u t a n t / P a r a m e t e r Perm it Lim i t

M e t h o d F r e que ncy Reporting Req u i remen ts

R.1, R

. 3, R.5

, R.6 Opacity 20% Method 9 As Required b y the Dep a rtment Semiannual

R.2, R

. 4, R.6 Tanks Subm erged F i l l C e r t i f y Sem i a n n u a l Sem i a n n u a l

Conditions

R.1.

R.2.

R.3.

R.4. CFA C shal l n o t c a us e or aut horiz e em issions t o be discharged t o t h e at m o sphere from any Gasoline Storage- MP04 tha t e x h i b it a n o p ac ity of 2 0 % or grea ter avera g e d over 6 c ons ecuti ve m i nutes (AR M
17. 8. 30 4(2)).

CFA C shal l l o ad (fil l ) t h e ga soli ne s t ora g e tan k o n ly t h ro ug h a perm anent s ubm erged fil l p i p e , or shall

eq ui p t h e tank wi t h a vapo r lo ss con t ro l d e v i ce (ARM 1 7 .8 .3 24 (3 )).

Complianc e Demonstratio n

A s require d b y the D e partm e nt, CFA C sh all perform a Met h o d 9 tes t in a c c o rda n ce w ith the M ont ana Source T e st P r otoc ol an d Pr oce dures Ma n u al. Ea ch obs ervat i o n p e rio d sha l l be a m i nim u m of 6

m i nutes, un les s any o n e re ad ing is 20% or great er, a t w h i c h poi nt th e o b serva t i on per i od sha ll be a

m i nim u m of 20 m i nutes or u n ti l a vi ol ati o n of t h e st an dar d h a s b een d o c um ented, w h ich e ver is t h e shorter peri od of tim e (A RM 17 .8. 1 2 13).

CFAC shal l c e rtify th at the subm erged fill pi pe w a s use d d u rin g loa d i ng (A RM 1 7

. 8 .1 21 3).

Perm it Nu m b er : OP2655- 01 25 Da te o f Decisio n : 0 5 / 2 1 / 03

E ffective Date: 06/21/03Recordkeepi n g

R.5.

R.6.

a.

b. All tes t rep o rt s shal l b e m a inta ine d on s ite an d su bm itted t o t h e De par t m e nt i n a ccor d an ce wi th th e Mon t a n a So ur ce Tes t Prot oc ol a n d Proce d ures Ma nu al ( A RM 1 7 .8 .1 0 6 ).

Repo rting

The an nua l c o m p lianc e c e rti f icat io n rep o rt requ ired by Secti o n V.B m u st c o ntai n a c e rtific ati o n
statem ent for t h e a b o v e ap pl i cab le re qu ire m ents. Th e se m i annua l re po rting sha ll pro v id e (A RM
17. 8. 12 12):

A su mmary of the results from any source testi n g t h at wa s perform ed; and

A statem ent c e rtifying t h at t h e subm erge d pip e w a s used duri n g l o ad in g o p era tio ns.

Perm it Nu m b er : OP2655- 01 26 Da te o f Decisio n : 0 5 / 2 1 / 03

E ffective Date: 06/21/03SECTION IV NON-APPLICABLE REQUIREMENTS

Air Quali t y Ad m i nistrat i v e Rules of Mo nt ana (ARM) an d Fed e ral Reg u la tio ns ide n t i f ied as n o t ap pli cab le to
the f aci lity or to a spe c ifi c e m ission u n it a t t h e t i m e of the perm it issuance are list e d bel o w (ARM 17. 8. 12 14).
The foll owing list does not preclude the ne ed t o co mp l y w i t h a n y n e w r e q u i r e me n t s t h a t ma y b e c o m e

app lic ab le dur ing t h e perm it term

.

A. FACILITY-WIDE

The fo ll ow in g tab l e co nta i ns no n-ap pl ica b l e req u irem ents tha t are adm i nis t rate d by t h e Air a n d Waste

Man a gem e nt Burea u of th e D e partm e nt of Env i ronm ent a l Q u a l i t y

.

Rule Citation

S t a t e F e d era l Reason

ARM 17.8.321, ARM 17.8.323, and
ARM 17.8.610 Thes e ru les are n o t app lic abl e be c a use th e f aci lit y is not listed in
the sourc e cat eg or y ci ted in the r u les.

ARM 17.8 316
A R M 1 7

. 8

. 3 2 0

, ARM 17.8.324( 4)-(6) Thes e ru les are n o t app lic abl e be c a us e th e f aci lit y does not h a ve the spe c ifi c em ission unit ci ted in

the rul e s.

40 CFR 60, Subparts C, Ca, Cb 40 CFR 60, Subparts D, Da, Db, Dc 40 CFR 60, Subparts E-J 40 CFR 60, Subparts K, Ka, Kb 40 CFR 60, Subparts L- Z 40 CFR 60, Subparts AA-EE 40 CFR 60, Subparts GG-HH 40 CFR 60, Subparts KK-NN 40 CFR 60, Subparts PP-XX 40 CFR 60, Subparts AAA-BBB 40 CFR 60, Subparts DDD 40 CFR 60, Subparts FFF-LLL 40 CFR 60, Subparts NNN-VV V 40 CFR 61, Subparts B-F 40 CFR 61, Subparts H-L 40 CFR 61, Subparts N-R 40 CFR 61, Subparts V-W 40 CFR 61, Subpart Y 40 CFR 61, Subpart BB 40 CFR 61, Subpart FF Thes e r e quir e m e nts are not appl i cabl e b ecaus e th e fa cil i t y is not an aff e c t ed s ource as def i ned in t h es e regu la tions

.

40 CFR 63, Subpart B 40 CFR 63, Subparts F-I 40 CFR 63, Subparts L-M 40 CFR 63, Subpart Q 40 CFR 82, Subparts A-E 40 CFR 82, Subparts G-H Thes e r e quir e m e nts are not appl i cabl e b ecaus e th e fa cil i t y is not an aff e c t ed s ource as def i ned in t h es e regu la tions

.

40 CFR 72 throu gh
40 CFR 78. Thes e r e quir e m e nts are not appl i cabl e b ecaus e th e fa cil i t y is not an aff e c t ed s ource as def i ned b y the acid ra in r e g u lations

.
40 CFR 68 This rul e is not a pplic able be caus e th e f aci lit y doe s not m eet th e threshold qu antity for an y r e gulated substance.

B. E M I S S I O N U N I T S

The perm it appli cat io n i d e n t i fied ap pl ica b l e req u irem ents: n on-a ppl ic a b le r e q u irem e n ts for in di vid u al or specif i c em ission u n its w e re no t l i ste d

. Th e D e partm e nt has l i ste d a ll n on-a ppl ica b l e requirem e nts i n Secti on IV.A; these req u ire m ents relat e t o ea ch s p e c ifi c u n it as wel l as faci lity wi d e

.

Perm it Nu m b er : OP2655- 01 27 Da te o f Decisio n : 0 5 / 2 1 / 03

E ffective Date: 06/21/03

### SECTION V – GENE RAL P E RMIT CONDITIONS

A. Compliance Require men t s ARM 17.8, S ubchapter 12, Operating Perm it Program §12 10(2)(a)- (c)& (e), §120 6(6)(c)&(b)

1.

2.

3.

4.

5.

6. The perm ittee m u st co m p ly with all conditions of t h e perm it. Any noncom pliance with the

term s or conditions of t h e perm it constitutes a vi olation of the Mont ana Clean Air Act, and may result in enforcement action, perm it m o dification, revocation and reissuance, or term ination, or denial of a perm it renewal a pplication under ARM Title 17, Chapte r 8, Subchapt er 12.

The filing of a request by the per m ittee f o r a perm it modification, revocation and reissuance, o r
term ination, or of a not ification of plan n e d ch anges or anticipated noncom pliance does not stay

any perm it co ndition.

It shall not be a defense for a per m ittee i n an enforcement action that it would have been

necessary to halt or reduce the perm itted activity in order to m a intai n com p liance with the
conditions of the perm it. If appropriate, t h is f actor m a y be consider ed as a m itigating factor in

asse ssing a penalty for noncom plianc e with an applicable require ment if the source
de m onstrates that both the health, safety or environm ental im pacts of halting or r e ducing operations would be m o re serious than the im pa cts of continui ng o p erations, and that such health, safety or environm e n tal im pa cts were unf ores eeable and could not have otherwise bee n avoided.

The per m ittee shall furnish to the Department, within a reasonable t i m e set by the Depart ment (not to be less than 15 da y s ), any inform ati on that the Depart ment may request in writing to
deter m ine wh ether cause e x ists for m odify ing, rev oki ng and reissui ng, or term in ating the

perm it, or to determ ine co m p lian ce with the perm it. Upon request, the perm ittee shall also
furnish to t h e Department copies of those record s that are required to be kept pur suant to the

term s of the perm it. This subsection doe s not im pair or otherwise limit the right of the

per m ittee to a ssert the confidentiality of the inform ati on requested by the Department, as provided in 7 5 -2-10 5 , MC A.

Any schedule of com p lianc e for applicable requirem e n t s with which the source is not in

co m p liance with at the tim e of perm it issuance sh all be supplemental to, and shal l not sanction

noncom pliance with, the applicable requirem e nts on which it was based.

For applicabl e requirem e nt s that will become effective during the pe rm it term , the source shall meet such req u ire m ents on a ti m e ly basis unless a m o re detailed plan or schedule is required by the applicable requirem e nt or the Department.

B. Certification Require men t s ARM 17.8, S ubchapter 12, Operating Pe rm it Program §1207 a nd §1213( 7)(a)&(c)-(d)

1.

2. Any application form , report, or com p liance certification subm itted pursuant to A R M Title 17, Chapter 8, Subchapter 12, s h all contain certifica tion by a responsibl e official of truth, accuracy
and com p leteness. This certification and any other certification require d under ARM Title 17, Chapter 8, Subchapter 12, s h all state that, based on information and belief for m ed after reasonable inquir y , t h e statem ents and inform ation in t h e docum ent are true, accu rate and

co m p lete.

Co m p liance c e rtifications s h all be subm i tted by Janua ry 31 of each y ear, or m o re frequently if otherwise specified in an applicable requirem e nt or elsewhere in t h e per m it. Each certific ation

m

u st include the required inform ation for th e previous calendar y ear (i.e., January 1 –

Dece mber 31).

Perm it Nu m b er : OP2655- 01 28 Da te o f Decisio n : 0 5 / 2 1 / 03

E ffective Date: 06/21/03

### 3.

4. Co m p liance certifications shall include t h e following:

a. The identification of each t e r m or condition of t h e permit that is the basis of the certification;

b. The identification of t h e m e thod(s) or oth e r m e ans used b y t h e own e r or operator for
deter m ining the status of com p liance wi th each ter m or conditi on during the certification period, and w h ether such methods or ot her m eans provide conti n uous or intermittent data,
as well as the additional i n formation required b y AR M 17.8

. 12 13( 7)(c)(ii);

c. The status of co m p liance w ith the term s and conditi on s of the perm it for the perio d covered by the certification, based on the m e thod or means desi gnated in ARM 17.8.1213( 7)(c)(ii),
as well as the additional i n formation re quired by AR M 17.8.1213( 7)(c)(iii); and

d. Such other fa cts as the Departm e nt may requi re to deter m ine the co m p lian ce stat us of the

source.

All co m p liance certifi cations m u st be su bm itted to the Environm ent a l Protection Agency , as well as to the Depart ment, at the address es liste d in the Notification Addresses A ppendix of this

perm it.

C. Permit Shiel d ARM 17.8, Subchapter 12, Oper ating Per m it Program §1214(1)-(4)

1. The applicable require m e nt s and non-federa lly enforceable require ments are included and specifically identified in t h is perm it and the perm it i n cludes a precise su mmary of the requirem e nts not applicabl e to the source. Co m p liance with the conditions of the perm it shall
be dee m ed co m p lian ce wit h any applica b le re quireme nts and any non-federally e n forceable require m e nts as of the date of perm it is suance.

2. The per m it shield described in 1 above shall re m a in in effect during the appeal of any perm it action (renewal, revision, r e opening, or r e vocation and reissuance) t o the Board of
Environm ental Review (Board), until su ch time as the Board renders its final decision.

3. Nothing i n this perm it alters or affects th e following:

a. The provisio n s of Sec. 760 3 of the FCA A , including t h e authorit y o f the adm i nistrator
under that section.

b. The liabilit y of an owner or operator of a source for any vi olation of applicable require m e nts prior to or at the time of permit issuance.

c. The applicable require m e nt s of the Acid Ra in Program, consistent with Sec. 765 1 g (a) of
the FCAA.

d. The abilit y of the adm i nistrator to obtain inform ation from a source pursuant to S ec. 7414
of the FCAA.

e. The abilit y of the Depart ment to obtain i n form ation from a source pursuant to the Montana Clean Air Act, Title 75, C h apter 2, MC A.

f. The em ergen c y powers of the Depart ment under the Montana Clean Air Act, Title 75, Chapter 2, MCA.

Perm it Nu m b er : OP2655- 01 29 Da te o f Decisio n : 0 5 / 2 1 / 03

E ffective Date: 06/21/03

### g. The ability of the Depart ment to establish or revise requirements for the use of Reasonably
Available Control Technol ogy (RACT) as define d in ARM Title 17, Chapter 8. However,
if the inclusion of a RACT into the permit pursuant t o ARM Title 17, Chapter 8, Subchapter 12, is appealed to the Board, the perm it sh ield, as it applies to the source’ s existing permit, shall rem a i n in effect unt il such tim e a s the Board has rendered its final
decision.

4. Nothing i n this perm it alters or affects th e ab ility of the Depart ment to take enfor c ement action
for a violatio n of an appl icable requirement or perm it term dem onstrated pursuant to ARM

17.8. 106 , Sou r ce Testing Protocol.

5. Pursuant to A R M 17.8. 132, for the pur pose of subm itting a com p liance certification, nothing i n these rules sh all preclude the use, including the exclus ive use, of any credible evidence or
inform ation relevant to whether a source woul d have been in com p liance. However, when

co m p liance or noncom pliance is dem onstrated by a te st or procedur e provided b y perm it or other applicable requirements, the sourc e sha ll then be presu m e d t o be in com p liance or

noncom pliance unless that presu m p tion is overcom e by ot her relevant credible evidence.

6. The perm it shield will not e x tend to m i nor pe rm it m odifications or changes not re quiring a

per m it revision (see Sectio ns I & J).

7. The per m it shield will extend to signific ant pe rm it modifications and transfer or assign m e nt of ownership (see Sections K & N).

D. Monitoring, Recordke epi n g, and Reporting Requirements ARM 17.8, S ubchapter 12, opera ting Pe rm it Program §12 12(2)&(3 )

1. Unless other w ise provided in this permit, th e perm itt ee shall maintain com p lian ce m onitoring records that include the following information.

a. The date, place as defined in the perm it, and tim e of s a m p ling or measure ment;

b. The date(s) a n aly ses were performed;

c. The com p any or entity th at performed the analy ses;

d. The analy tica l techniques o r methods used;

e. The results of such analy s e s ; and

f. The operating conditions at the tim e of sam p ling or measurement.

2. The perm ittee shall retain records of all requi red m onitoring data and s upport inf o rmation for a period of at le ast 5 y ears from the date o f the m onitoring sam ple, measure ment, report, or application. Support infor m ation includ es a ll calibration and m a intenance record s and all original strip- chart recordings for contin u ous m onitoring instrum e ntation, and co pies of all reports required b y the permit. All m onitoring data, support inform ation, and req u ired reports
and summari es may be m a intained in com puteri zed form at the plant site if the information is made available to Department personnel upo n request, which m a y be for either hard copies o r

co m puterized format. Strip-charts m u st be maintain ed in their original form at t h e plant site and
shall be m a de available to De partment personnel upo n request.

3. The per m ittee shall subm it to the Department , at the addresses locat ed in the Notification
Addresse s Appendix of this per m it, reports of an y required m onitoring by January 31 and July
31 of each y e ar, or m o re fr equently if otherwi se spe c i f ied in an applicable require m e nt or

Perm it Nu m b er : OP2655- 01 30 Da te o f Decisio n : 0 5 / 2 1 / 03

E ffective Date: 06/21/03

### elsewher e in the per m it. The m onitoring report subm itted on Janua ry 31 of each y ear m u st include the required m onitoring i n form ation for t h e p e riod of Jul y 1 thro ugh De cem b er 31 of the previous y ear. The m onitoring repor t subm itted on Jul y 31 of e ach y ear m u st include the required m o n itoring i n for m ation for th e period of Ja nuar y 1 t h rou gh June 3 0 of the current year. All instances of deviations from the per m it requi re ments m u st be clearly identified in such reports. All required repor ts m u st be certified b y a responsible offic i al, consistent with ARM

17.8. 120 7.

E. Prompt Devi ation Reporting ARM 17.8, S ubchapter 12, Oper ating Perm it Program §12 12(3)(c)

The perm ittee shall prom ptly report devia tions from perm it requirements, including those
attributable to upset conditi ons as defined in the perm it, the pro b abl e cause of such deviations, and

any corrective actions or preventive me asures taken. To be consid ered prom pt, deviations sh all be reported as part of the rout ine reporting requirem e nts under ARM 1 7 .8.1 212( 3)(b ) and, if appli cable,
in accordance with the m a lf unction reporting requirements under ARM 17.8.110, unless otherwise specified in an applicable require m e nt.

F. Em ergency Provisions ARM 17.8, S ubchapter 12, Operating Perm it Program §12 01(13) and § 121 4(5), (6)&(8)

1. An “emergency ” m e ans any situation ari s i ng from sudden and reasonabl y unforeseeable events beyond the control of the s ource, includi ng acts of God, which situa tion requires i mmediate
corrective act ion to restore norm a l operat i on and causes the source to exceed a technologybased em ission lim itation under this per m it due to the unavoi dable increases in emissions
attributable to the e m ergen c y

. An emer genc y shall not include noncom p liance to the extent caused by im properl y desi gned equi pment, lack of reasonable preventive mainte nance, carel e ss or im proper operation, or o p erator error.

2. An em ergency constitutes an affirm ativ e defen se to an action brought for noncom plian ce with a technology

- based em i ssion lim it ation if t h e pe r m ittee dem onstrates through properly signed,

contem poraneous logs, or othe r relevant evidence, that:

a. An em ergency occurred and the perm ittee can identify the cause(s) of the emergency

.

b. The perm itted facility was at the time being properly operated.

c. During the pe riod of t h e emergency the per m ittee took all reasonable steps to m i nim i ze levels of e m is sions that exceeded the e m i ssion standards or other re quirements in the

perm it.

d. The perm ittee subm itted notice of the emergenc y to the Depart ment within 2 wor k ing da y s of the tim e w h en em i ssion lim it ations were ex ce eded due to the emergency

. This notice fulfills the requirements of ARM 17.8.1212(3)(c ). T h is notice m u st contain a description of the emerge ncy , any steps taken to m i t i ga te em issions, and corrective actions taken.

3. These emergency provisions are in addition to any emergency , m a lf unction or upset provision
contained in any ap plicabl e requirem e nt.

Perm it Nu m b er : OP2655- 01 31 Da te o f Decisio n : 0 5 / 2 1 / 03

E ffective Date: 06/21/03

### G. Inspection and Entry ARM 17.8, S ubchapter 12, Oper ating Perm it Program §12 13(3)&(4 )

1. Upon presentation of credentials and other requirem e n t s as may be r e quired by la w, the

perm ittee shall allow the Depart m e nt, the ad m i ni strat o r, or an authorized repres entative (including an authorized contractor acting as a represe ntative of the Depart ment or the
ad m i nistrator ) to perform t h e following:

a. Enter the premise s where a source required to obtain a per m it is located or e m is sionsrelated activity is conducte d, or where record s m u st be kept under the conditions of the

perm it.

b. Have ac ces s t o and copy, a t reasonable ti m es, any records that m u s t be kept under the
conditions of the perm it.

c. Inspect at reasonable times any facilities, em ission units, equipm en t (including m onitoring and air pollution control equipm ent), pra c tices, or operations regulated or require d under the perm it.

d. As authorized b y the M onta n a Clean Air Act and rules prom ulgated thereunder, sam ple or

m onitor, at re asonable ti m e s, any substances or para meter s at any location for the purpose of assuring com p lianc e wi th the perm it or applicable require m e nts.

2. The per m ittee shall inform the inspector of a ll workplace safety rules or requirements at the time of inspection. This s ection shall not lim it in any m a nner the Department’s statutor y rig h t of entr y and i n spection as provided for i n 75-2- 403

, MCA.

H. Fee Payment ARM 17.8, Subchapter 12, Opera ting Per m it Program §1210(2)(f) and ARM 17.8, Subchapter 5, Air Quality Permit Application, Operation, a nd Open Burning Fees §505(3)-(5) (STATE ONLY)

1. The per m ittee m u st pay application and opera ting fees, pursuant to ARM Title 17, Chapter 8, Subchapter 5.

2. Annuall y , the Department shall provide the perm ittee with written notice of the am ount of the fee and the basis for the fee assessment. The air quality operation fe e is due 30 da y s after receipt of the notice, unless the fee assessm ent is appealed pursuant to ARM 17.8.511. If any portion of the fee is not appealed, that p o rtion of the f ee that is not appealed is due 30 da y s aft e r receipt of the notice. Any re m a ining fee, which may be due after the co m p letion of an appeal,
is due immed i ately u pon issuance of the Board’s decision or upo n c o m p letion of any judicial
review of the Board’ s decision.

3. If the perm itt ee fails to pay the required fee (or any re quired p o rtio n of an appea l ed fee) within
90 da y s of the due date of the fee, the Depart m e nt may im pose an additional assessment of 15% of the fee (or any required portion of an appeal ed fee) or $1 00, whi c hever is greater, plus
interest on th e fee (or any required porti on of an appealed fee), co m puted at the interest rate
established under 15-3 1 -5 10(3), MCA.

I. Minor Permi t Modifications ARM 17.8, S ubchapter 12, Opera ting Perm it Program §12 26(3)&(1 1 )

1. An application for a m i nor per m it m odification n eed only address in detail those portions of the

perm it application that req u ire revision, updatin g , sup p lem e ntation, or deletion, a nd m a y reference any required in form ation that has been previousl y subm itted.

Perm it Nu m b er : OP2655- 01 32 Da te o f Decisio n : 0 5 / 2 1 / 03

E ffective Date: 06/21/03

### 2. The per m it shield under A R M 17.8.1214 will not ext e nd to any m i nor m odificat ions processed pursuant to A R M 17.8. 122 6.

J. Changes Not Requiring Permit Revisi on ARM 17.8, Subchapter 12, Operating Per m it Program §1224(1)-(3)

, (5)&(6)

1. The per m ittee is authorized to m a ke chan ges within the facility as described below, provided the following conditions are m e t.

a. The proposed changes do not require the per m ittee to obtain an air quality preconstruction

perm it under ARM Title 17, Chapter 8, Subchapter7.

b. The proposed changes are not m odificat ions under Title I of the F C AA, or as defined in ARM Title 17, Chapter 8, Subchapters 8, 9, or 10.

c. The e m ission s resulting from the proposed ch anges do not exceed the e m issions allowable under this per m it, whether expressed as a rate of em i s sions or in t o t a l em issions.

d. The proposed changes do not alter per m i t te r m s that ar e neces sary to enforce applicable

em ission lim itations on emission units c overed b y t h e perm it.

e. The facility provides the adm i nistrator and th e Department with wr itten notification at least
7 da y s prior t o m a king the proposed cha nges.

2. The per m ittee and the Depart m e nt shall attach each notice provided pursuant to 1.e above to their respecti v e copies of this perm it.

3. Pursuant to t h e conditions a bove, the permitt ee is auth orized to m a k e Section 502(b)(10) changes, as defined in ARM 17.8.1201(30), withou t a per m it revisi on. For each such change, the written notification required un der 1.e above shall include a d escription of t h e change within the source, the date on which the change will o ccur, any change in em issions, and any perm it

term or condition that is n o longer applic able as a result of the chan ge.

4. The per m ittee may m a ke a change not specifica lly addressed or prohibited by the per m it ter m s and conditi on s without req u iring a permit revision, pr ovided t h e fol l owing con d it ions are m e t.

a. Each proposed change doe s not weaken the enforceability of any existing perm it
conditions.

b. The Depart ment has not objected to such change.

c. Each proposed change m e e t s all applicable requirem e n t s and does n o t violate an y existing

perm it term o r condition.

d. The perm ittee provi des contem poraneous written noti ce to the Depart m e nt and the
ad m i nistrator of each change that is above the level for insignificant e m is sion units as
defined in A R M 17.8.1201(22) and 17.8.1206(3), and the written notice describes each such change, including the date of the change , any change in em issions, poll u tant s em itted,
and an y appli cable requirement that would appl y as a result of the change.

5. The perm it shield authorized b y ARM 1 7

. 8.12 14 shall not appl y to c h anges made pursuant to ARM 17.8.1224(3) and (5), but is applica b le to terms a nd conditions that allow for increase s and decrease s in em i ssions pursuant to A R M 17.8.1224(4).

Perm it Nu m b er : OP2655- 01 33 Da te o f Decisio n : 0 5 / 2 1 / 03

E ffective Date: 06/21/03

### K. Significant Permit Modifi cations ARM 17.8, S ubchapter 12, Operati ng Perm it Program §12 27(1), ( 3 ) & (4)

1. The m odification pr ocedures set forth in 2 belo w m u s t be used for any application requesting a significant modification of this perm it. Signi ficant modifications i n clude the fol l owing:

a. Any perm it m odification that does not qualif y as either a m i nor m odification or as an
ad m i nistrative perm it amendm ent;

b. Every si gnifi cant change in existing permit m onitoring terms or conditions;

c. Every relaxat i on of perm it reporting or r eco rdkeeping term s or conditions that li mit the Depart ment’s abilit y to det e rm ine co m p l i ance with any applicable rule, consistent with the requirem e nts of the rule; or

d. Any other ch ange determ ined b y t h e Departm e nt to be significant.

2. Significant modifications shall meet all requi rem e nts of ARM Title 17, Chapter 8, including those for appl ications, publ ic participation, and re view b y affected states and the ad m i nistrator, as they apply to perm it issu ance and rene wal, excep t that an application for a significant per m it

m odific a tion need only address in detail those porti ons of the perm i t application that require revision, up d a ting, supp lementation or deletion.

3. The perm it shield provi ded for in ARM 1 7 .8 .1 214 shall extend to si gnificant m odifications.

L. Reopening for Cause ARM 17.8, S ubchapter 12, Oper ating Perm it Program §12 28(1)&(2 )

This perm it may be reope ned and revi s e d under the f o llowing circ umstances.

1. Additional applicable requirem e nts under the FCAA beco m e applicable to the facility when the perm it has a remaining term of 3 or m o re y ears. Reopening an d revision of t h e perm it
shall be co m p leted not later than 18 m ont hs after promulgation of th e applicable requirem e nt. No reopening is required u nder AR M 17 .8.12 28(1)(a) if the effective date of the applicable require m e nt is later than the da te on which the perm it is due to expire, unless the original perm it or any of its term s or conditions have been ex tended pursuant to ARM

17.8. 122 0(12 ) or 17. 8.1 2 2 1 (2).

2. Additional re quirements (including excess e m i ssion require m e nts) beco m e applicable to an
affect ed source under the Acid Rain Program . Upon approval by t h e adm i nistr a tor, excess

e m is sion offset plans shall be dee m ed incorporated into the perm it.

3. The Department or the ad ministrator determ in es that the perm it contains a m a te rial m i stake
or that inaccurate stat e m ent s were made i n establishing the e m ission standards or other

term s or conditions of t h e p e rm it.

4. The adm i nistrator or the Departm e nt determ ines that the perm it m u st be revised or revoked and reissued to ensure compliance with the applicable requirem e nts.

M. Permit Expiration and R e newal ARM 17.8, S ubchapter 12, Operating Perm it Pr ogram §12 10(2)(g), §122 0(11)&( 12), and §12 0 5 (2)(d)

1. This perm it is issued for a fixed term of 5 y ears.

Perm it Nu m b er : OP2655- 01 34 Da te o f Decisio n : 0 5 / 2 1 / 03

E ffective Date: 06/21/032. 

### Renewal of t h is perm it is subject to the same procedural requirem e nts that appl y to perm it issuance, incl uding those for application, content, public participation, and affected state and
ad m i nistrator review.

3. Expiration of this perm it te r m inates the per m ittee’ s right to operate unless a ti m e ly and
ad m i nistratively com p lete renewal appli cati on has been subm itted consistent with ARM

17.8. 122 1 an d 17. 8.1 205( 2)(d). If a ti mely and ad ministratively com p lete ap plication has been
subm itted, all term s and co nditions of the perm it, including the application shield, remain in
effect aft e r the perm it expires until the pe rm it renewal has been issued or denied.

4. For renewal, the perm ittee shall subm it a com p let e air qualit y operating perm it ap plication to the Depart me nt not later than 6 m onths prior to the expiration of this perm it, unless otherwis e specified. If necessary to ensure that the ter m s of the existing permit will not lapse before renewal, the Department may specify

, in wr iting t o t h e perm ittee, a longer tim e period for
subm i ssion of the renewal application. Such written notification m u st be provided at least 1

y ear before th e renewal application due date est ablished in the existi ng perm it.

N. Severability Clause ARM 17.8, S ubchapter 12, Opera ting Perm it Program §12 10(2)(i) & (l)

1. The adm i nistr a tive appeal or subsequent judicial review of the issuance by the Depart m e nt of an initial perm it under this subchapter shall not im pair in any m a nner the underl y i ng applicabilit y of all applicable requirements, and such requi rem e nts continue to a ppl y as if a fi nal perm it
decision had not been reached by the Depart m e nt.

2. If any pro v ision of a perm it is found to b e invalid, all valid parts th at are severab le from the invalid part r e m a in in effect. If a provis i on of a permit is invalid i n one or m o re of its applications, the provision re m a ins in eff ect in all valid applications that are sever able fro m the invalid applic ations.

O. 

### Transfer or Assignment of Owner s hip ARM 17.8, S ubchapter 12, Oper ating Perm it Program §12 25(2)&(4 )

1. If an adm i nistrative perm it am end m ent involves a change in owner s hip or o p erational control, the applicant m u st include in its request to the Department a written agreem ent containing a specific date for the transfer of perm it responsib ilit y , coverage and liabilit y betw een the current and new permittee.

2. The perm it shield provi ded for in ARM1 7.8.1 214 shall not extend t o adm i nistrative perm it

a m end m ents.

P. Emis sions T r ading, Mar k etable Per m its, Econo m ic In centives ARM 17.8, S ubchapter 12, Op erating Perm it Program §12 26(2)

Notwithstanding ARM 17. 8.12 26(1) an d (7), m i nor air qualit y operating perm it m odification procedures may be used fo r perm it m odificati ons invo lving t h e use of econom ic incentives, marketable p e rm its, emissions trading, and ot her si m ilar approaches , to the extent that such m i nor

perm it m odification procedures are explicitly provi de d for in t h e Montana State Im pl ementation Plan or in applicab le requirem e n t s prom ulgated b y t h e adm i nistrator.

Q. No Property Rights Conveyed ARM 17.8, S ubchapter 12, Oper ating Perm it Program §12 10(2)(d)

This perm it d o es not conve y an y pr opert y rights of an y sort, or an y exclusive privilege.

Perm it Nu m b er : OP2655- 01 35 Da te o f Decisio n : 0 5 / 2 1 / 03

E ffective Date: 06/21/03

### R. Testing Req u irements ARM 17.8, S ubchapter 1, General Provisions §10 5

The perm ittee shall co m p ly with ARM 17.8.105.

S. Source Te sting Protocol ARM 17.8, S ubchapter 1, General Provisions §10 6

The perm ittee shall co m p ly with ARM 17.8.106.

T. Malfunctions ARM 17.8, S ubchapter 1, General Provisions §11 0

The perm ittee shall co m p ly with ARM 17.8.110.

U. Circu mventi on ARM 17.8, S ubchapter 1, General Provisions §11 1

The perm ittee shall co m p ly with ARM 17.8.111.

V. Motor Vehic l es ARM 17.8, S ubchapter 3, Em ission Standards §32 5

The perm ittee shall co m p ly with ARM 17.8.325.

W. Annual Emi ssions Inventory ARM 17.8, Subchapter 5, Air Quality Per m it A pplication, Operation and Open B u rning Fees §505 (STATE ONLY)

The perm ittee shall suppl y the Department with annua l production a nd ot her infor m ation for all

em ission units necessary to calculate act u al or esti m at ed actual am o unt of air pollutants em itted during each calendar y ear. Inform ation shall be gathered on a calendar-y ear basis and subm itted to the Depart me nt by the date required in the e m i ssion inventory request, unless otherwise spe c i f ied in this perm it. Inform ation shall be in the u n its required b y the Department.

X

. Open Burni n g ARM 17.8, S ubchapter 6, Open Burnin g §6 04, 605 a nd 6 0 6

The perm ittee shall co m p ly with ARM 17.8.604, 605 and 606.

Y. Preconstru c t i on Permits ARM 17.8, Subchapter 7, Per m it, Construction and O p eration of A i r Contam ina n t Sources §743, 744, 745 and 764 (ARM 17.8.745(1), and 764(1)(b) are STATE E N FORCE ABLE ONLY until approval b y t h e EPA as part of the SIP)

1. Except as specified, no per s on shall construct, in stall, alter or use any air contaminant source or
stack associated with an y s ource without first obt ainin g a perm it fro m the Department or Board. A per m it is not required for those sources or stacks as specified by ARM 17.8.745(1).

2. The perm ittee shall co m p ly with ARM 17.8.743, 744, 745, 748 and 764.

3. ARM 17.8.7 4 5 (1) specifies de m i nim i s cha nges as construction or c h anged condi tions of operation at a facility holdi ng an air qual ity pr econstruction perm it issued under Chapter 8 that
does not increase the fa cili ty’ s potential to em it by more than 15 tons per y ear of any pollutant, except (STATE ENFORCEABLE ONL Y until approv ed by t h e EP A as part of the SIP):

Perm it Nu m b er : OP2655- 01 36 Da te o f Decisio n : 0 5 / 2 1 / 03

E ffective Date: 06/21/03

### a. Any construction or changed condition t h at would vi olate any condition in the facility’s existing air q u alit y precon s truction per m it or any applicable rule contained in Chapter 8 is prohibited

, ex cept as provided in ARM 17.8. 745( 2).

b. Any construction or changed conditions of operation that would qualify as a m a j o r

m odification under Subcha pters 8, 9 or 1 0 of Chapter 8.

c. Any construction or changed condition of ope ration t h at would aff ect the plume rise or dispersion characte r istic of e m issions that w ould cause or contribut e to a violatio n of an

am bient air qualit y standard or am bient air increment as defined in ARM 17.8.8 0 4

.

d. Any co nstruction or im pro v em ent project with a potential to em it m o re than 15 tons per

y ear m a y not be artificially split into smalle r projects to avoid air qualit y preconstruction

perm itting.

e. Em ission reductions obtai ned through offsetting within a facility ar e not include d when
deter m ining the potential emission increase fro m construction or ch anged conditi ons of operation, unless such redu ctions are m a de federally e n forceable.

4. Any facilit y making a de minim i s chan ge pursuant t o ARM 17.8. 745(1) shall notif y the Department if the change would i n clude a cha nge in control equipment, stack height, stack
dia m eter, st ac k gas te m p era t ure, source location or fue l specificatio ns, or would result in an
increase in so urce capacity above its permitted opera tion or t h e addi tion of a new em ission unit

. The notice must be subm itted, in writing, 10 da y s pri o r to start up or use of the proposed de
minim i s chan ge, or as soon as reasonably prac ticable in the event of an unanticipated
circu m st ance causing the de m i ni m i s ch ange, and m u st include the inform ation requested in ARM 17.8.745(1). (STAT E ENFORCE ABLE ONL Y until approval by the EP A as part of the SIP)

Z. 

### National Emission Standard for Asbe stos 40 CFR, Part 61, Su bpart M

The per m ittee shall not conduct any asbestos ab atement activities except in accordance with 40 CFR 61, Sub p art M (National Em ission Standard for Hazardous Air Pollutants f o r Asbestos).

AA. Asbestos ARM 17.74, Subchapter 3, General Provisions and Su bchapter 4, F ees

The perm ittee shall co m p ly with ARM 17.74.301, et seq ., and ARM 17.7 4 .4 01, et seq . (State onl y )

BB. Stratospheri c Oz one Prot ection – Serv icing of Motor Vehicle A i r Conditioners 40 CFR, Part 82, Su bpart B

If the perm ittee perform s a service on motor vehicles and this service involves o z one-depleting substance/refrigerant in the m o tor vehicle air c onditioner (MVAC), the perm ittee is subject to all the applicable requirem e nts as specified in 40 CFR 8 2

, Subpart B.

CC. Stratospheri c Oz one Prot ection – Rec y cling and Emission Red u ctions 40 CFR, Part 82, Su bpart F

The perm ittee shall co m p ly with the standards fo r recycling and em i ssion reductions in 40 CFR 82, Su bpart F

, except as provided f o r M VACs in Subpart B.

Perm it Nu m b er : OP2655- 01 37 Da te o f Decisio n : 0 5 / 2 1 / 03

E ffective Date: 06/21/03

### 1. Persons opening appliance s for maintenance, service, repair, or dis posal m u st com p ly with the required practices pursuant to §82.156.

2. Equipm ent used during the maintenance, service, repai r or disposal of appliances m u st co m p ly with the standards for recycling and r ecover y equipm ent pursuant t o §8 2.15 8.

3. Persons perfor m ing mainte nance, servic e , repair or disposal of appliances m u st b e certified by an approved t echnical certification progr am pursuant to §8 2.16 1.

4. Persons disposing of sm all appliances, MVACs and MVAC-like ( as defined at §82.152) appliances must com p ly with recordkeep ing requirements pursuant to §82.166.

5. Persons owning commerci a l or industria l process refri geration equi pment m u st com p ly with t h e leak repair requirements pursuant to § 8 2 .15 6

.

6. Owners/oper a tors of appli a nces nor m a ll y cont aining 50 or m o re pounds of refrigerant m u st keep records of refrigerant purchased and adde d to such appliances pursuant to §82.166.

DD. Em ergency Episode Plan

The perm ittee shall co m p ly with the requirem ents cont ained in Chapter 9.7 of t h e State of Montana Air Quality Contr o l Im plement a tion Plan.

Each m a jor source em itting 100 tons per y ear located in a Priorit y I Air Quality Control Regi on, shall subm it t o the Department a legall y enforceab le Emergency Episode Action Plan (EEA P) that
details how the source will curtail em issions dur ing an air polluta nt emergency episode. The
industrial EE AP shall be in accordance with the Depart m e nt’ s EEAP and shall be subm itted according to a ti m e table d e veloped by the De part me nt, following Priority I reclassific a tion

EE. Definitions

Term s not otherwise defin e d in this per m it or in the Definitions and Abbreviati ons Appendi x of this perm it, s h all have the meaning assi gned to them in the referenced regulations.

Perm it Nu m b er : OP2655- 01 38 Da te o f Decisio n : 0 5 / 2 1 / 03

E ffective Date: 06/21/03

# APPENDICES

Perm it Nu m b er : OP2655- 00 39 Date o f Decisio n : 0 5 / 2 1 / 0 3

E ffective Date: 06/21/03Appendix A RULE CITA TION

Pursuan t t o C h ap ter 41 8, La ws of Mo nta n a 1 9 9 5 , effe cti v e Ju ly 1, 1 9 9 5 , t h e Air Q u a lity Div i si on was transferred fro m the D e part m e nt of H eal t h a nd E n v i ro n m ental Sci e n c es to t h e D e pa rtm e nt of E nvi ronm ental Q u ali t y

. To i m plem ent th e leg i sla tio n, A R M 1 6

. 8 .1 01 t h rou gh A R M 16. 8. 20 25, an d 1 6

. 9 .1 01 thr o u gh
16. 9. 10 6, e x c e p t a n y rep eal e d rul e s, w e re t r ansferred t o t h e D e partm e nt of E n v i ronm ent a l Q u ali t y as A R M
17. 8. 10 1 t h ro ug h 1 7

. 8 .1 23 4 an d 1 7

. 80. 10 1 t h rou g h 1 7

. 80. 10 6 effec t i v e A u gus t 2 2

, 19 96. O n Se p t em ber 19,
19 97, th e ru le transfer was s ubm itted to E P A and is p e n d in g a ppr ov al as part of the State Im ple m e n ta tio n Pl an (SIP). The ol d ci ta tio ns are stil l c ite d i n t h e SIP unti l E P A approves t h e rule transfe r

.

NEW CITATION O L D C I T A T I O N

Sub-ch apt e r 1 – G e n e ral Pro v isi ons 17. 8. 10 1 D e finit i o n s 16. 8. 70 1
17. 8. 10 2 Incorp orat io n by Referen ce - Publi cat io n D a tes a nd

A v ail a bi li ty o f Referen ced D o cum e nts 16. 8. 71 0
17. 8. 10 3 Incorp orat io n by Referen c e 16. 8. 70 8
17. 8. 10 5 Testi ng Req u i r em ents 16. 8. 70 4
17. 8. 10 6 Source T e sti n g Prot oco l 16. 8. 70 9
17. 8. 11 0 Malfu n c tio ns 16. 8. 70 5
17. 8. 11 1 Circum venti o n 16. 8. 70 7
17. 8. 12 0 V a rianc e Proc edures – I n it ia l A p p lic ati o n 16. 8. 10 1
17. 8. 12 1 V a rianc e Proc edures

– Ren e w a l A p p lic ati o n 16. 8. 10 2
17. 8. 13 0 Enforcem ent Proced ures – N o tic e of V i ol ati on –O rder t o Ta ke
Correct ive A c tio n 16. 8. 20 1
17. 8. 13 1 Enforcem ent Proced ures – A ppea l t o B o a r d 16. 8. 20 2
17. 8. 14 0 Rehe arin g Pro ced ures – For m

and Fil i n g of Peti ti on 16. 8. 30 2
17. 8. 14 1 Rehe arin g Pro ced ures – F ili ng Req u irem ents 16. 8. 30 3
17. 8. 14 2 Rehe arin g Pro ced ures – Bo a r d Re view 16. 8. 30 4

Sub-chapt e r 2 – Am bient Air Quali t y 17. 8. 20 1 D e finit i o n s 16. 8. 80 6
17. 8. 20 2 Incorp orat io n by Referen c e 16. 8. 82 3
17. 8. 20 4 Am bient A i r Mon i t o rin g 16. 8. 80 7
17. 8. 20 5 Enforce a bi li ty 16. 8. 80 8
17. 8. 20 6 Met h o d s a nd D a ta 16. 8. 80 9
17. 8. 21 0 Am bient A i r Q u ali t y Stan d a rds for Sulf ur D i ox ide 16. 8. 82 0
17. 8. 21 1 Am bient A i r Q u ali t y Stan d a rds for N itr o g en D i o x id e 16. 8. 81 6
17. 8. 21 2 Am bient A i r Q u ali t y Stan d a rds for C a rbo n M o n o x i de 16. 8. 81 1
17. 8. 21 3 Am bient A i r Q u ali t y Stan d a rds for O z o n e 16. 8. 81 7
17. 8. 21 4 Am bient A i r Q u ali t y Stan d a rds for H y droge n Su lfid e 16. 8. 81 4
17. 8. 22 0 Am bient A i r Q u ali t y Stan d a rds for Set tle d Parti c ul at e Matt er 16. 8. 81 8
17. 8. 22 1 Am bient Air Quali t y Stan d a rds for Visi bi lity 16. 8. 82 2
17. 8. 22 2 Am bient A i r Q u ali t y Stan d a rds for Le ad 16. 8. 81 5
17. 8. 22 3 Am bient A i r Q u ali t y Stan d a rds for PM-1 0 16. 8. 82 1
17. 8. 23 0 Fluori d e in F o rage 16. 8. 81 3

Sub-ch apt e r 3 – Em ission St and a rds
17. 8. 30 1 D e finit i o n s 16. 8. 14 30
17. 8. 30 2 Incorp orat io n by Referen c e 16. 8. 14 29
17. 8. 30 4 V i sibl e A i r C ont am inants 16. 8. 14 04
17. 8. 30 8 Particu l at e M a tter, A i rbor n e 16. 8. 14 01
17. 8. 30 9 Particu l at e M a tter, Fue l B u rnin g E q u i pm ent 16. 8. 14 02
17. 8. 31 0 Particu l at e M a tter, Ind u stri a l Processes 16. 8. 14 03
17. 8. 31 5 O dors 16. 8. 14 27
17. 8. 31 6 Incin e rat o rs 16. 8. 14 06

Perm it Nu m b er : OP2655- 00 A- 1 Date of Decision:05/21/0 3

E ffective Date: 06/21/0317. 8. 32 0 Wood-Was t e Burners 16. 8. 14 07
17. 8. 32 1 K r aft Pulp Mi lls 16. 8. 14 13
17. 8. 32 2 Sulfur O x i d e Em issions – S u lfur i n Fu el 16. 8. 14 11
17. 8. 32 3 Sulfur O x i d e Em issions – P r im ary Coppe r Sm elters 16. 8. 14 12
17. 8. 32 4 H y drocarbo n Em issions – P e trol eum Products 16. 8. 14 25
17. 8. 32 5 Mot o r V e h i cl es 16. 8. 14 26
17. 8. 32 6 Prohib ite d Ma teria l s for Wo od or C o al Re side nti a l St ov es 16. 8. 14 28
17. 8. 33 0 Em ission Sta n dards for Exis tin g A l u m inu m Plants- D e finit i o n s 16. 8. 15 01
17. 8. 33 1 Em ission Sta n dards for Exis tin g A l u m inu m Plants- Stan dards for Fl uo ride 16. 8. 15 02
17. 8. 33 2 Em ission Sta n dards for Exis tin g A l u m inu m Plants- Stan dard 16. 8. 15 03
17. 8. 33 3 Em ission Sta n dards for Exis tin g A l u m inu m Plants

- Mon i t o rin g a nd Rep o rti n g 16. 8. 15 04
17. 8. 33 4 Em ission Sta n dards for Exis tin g A l u m inu m Plants - Sta r tup an d Sh ut dow n 16. 8. 15 05
17. 8. 34 0 Stand a rd of Perform ance fo r N e w Statio n a ry Sources 16. 8. 14 23
17. 8. 34 1 Em ission Sta n dards for H a z a rdo u s A i r Pol l ut ants 16. 8. 14 24
17. 8. 34 2 Em ission Sta n dards for H a z a rdo u s A i r Pol l ut ants for So urce C a te gor i e s 16. 8. 14 31

Sub-ch apt e r 4 – Stac k H e ig h t s an d D i s p ersion Tec h n i q u e s 17. 8. 40 1 D e finit i o n s 16. 8. 12 04
17. 8. 40 2 Req u irem ents 16. 8. 12 05
17. 8. 40 3 Exem ptions 16. 8. 12 06

Sub-ch apt e r 5 – Air Qua lity Perm it Applic ati on, Operat i on, an d Op en Burni n g Fees
17. 8. 50 1 D e finit i o n s 16. 8. 19 01
17. 8. 50 4 A i r Q u ali t y Perm it A pplic ati on Fe es 16. 8. 19 05
17. 8. 50 5 A i r Q u ali t y O p erat io n Fees 16. 8. 19 03
17. 8. 51 0 A nnua l R e v i e w 16. 8. 19 02
17. 8. 51 1 A i r Q u ali t y Perm it A pplic ati on/O p erat io n Fee 16. 8. 19 06
17. 8. 51 4 A i r Q u ali t y O p en Bur n in g F ees 16. 8. 19 07
17. 8. 51 5 A i r Q u ali t y O p en Bur n in g F ees for C o n d i t i on al, Em ergency , C h ristm a s Tree Wast e, a nd Com m e rcial Film Producti on O p en Bu rnin g Perm its 16. 8. 19 08

Sub-ch apt e r 6 – O p e n B u rni ng 17. 8. 60 1 D e finit i o n s 16. 8. 13 01
17. 8. 60 2 Incorp orat io n by Referen c e 16. 8. 13 11
17. 8. 60 4 Prohib ite d O p en B u rni n g – When Perm it Req u ire d 16. 8. 13 02
17. 8. 60 5 Speci al B u rn i ng Peri ods 16. 8. 13 05
17. 8. 60 6 Min o r O p e n B u rni ng S ource Req u irem ents 16. 8. 13 03
17. 8. 61 0 Maj o r O p e n B u rni ng S ource Restri cti ons 16. 8. 13 04
17. 8. 61 1 Em ergency O p en Bur n in g P e rm its 16. 8. 13 08
17. 8. 61 2 Con d i tio na l A i r Q u al ity O p e n B u rni ng Per m its 16. 8. 13 07
17. 8. 61 3 Christm a s Tree Waste O p e n Burn in g Per m its 16. 8. 13 09
17. 8. 61 4 Com m e rcial Film Produc tio n O p e n B u rni ng Perm its 16. 8. 13 10
17. 8. 61 5 Firefigh ter Tr ain i n g 16. 8. 13 06

Sub-ch apt e r 7 – Perm it, Co n s truct i o n a nd O p erati o n of A i r Con t am inant S ourc e s 17. 8. 70 1 D e finit i o n s 16. 8. 11 01
17. 8. 70 2 Incorp orat io n by Referen c e 16. 8. 11 20
17. 8. 70 4 General Pro c e dures for Air Quali t y Preco nstruc ti on Per m itting 16. 8. 11 19
17. 8. 70 5 When Perm it Req u ire d

– Ex clusi o ns 16. 8. 11 02
17. 8. 70 6 N e w or A ltere d Sourc e s a n d Stacks – Per m it A ppli cat io n Re qu irem ents 16. 8. 11 05
17. 8. 70 7 Waivers 16. 8. 11 18
17. 8. 70 8 N o tific ati o n o f Em issions In crease 16. 8. 11 21
17. 8. 71 0 Con d i tio ns for Issuanc e of Perm it 16. 8. 11 09
17. 8. 71 5 Em ission C o n t rol Req u irem ents 16. 8. 11 03
17. 8. 71 6 Inspec ti on of Perm it 16. 8. 11 15
17. 8. 71 7 Com p liance w ith O t her St at utes an d R u les 16. 8. 11 17

Perm it Nu m b er : OP2655- 00 A- 2 Date of Decision:05/21/0 3

E ffective Date: 06/21/0317. 8. 72 0 Publi c R e v i e w of Perm it A ppl ica t i o n 16. 8. 11 07
17. 8. 73 0 D e nia l of Per m it 16. 8. 11 10
17. 8. 73 1 D u ratio n of Perm it 16. 8. 11 11
17. 8. 73 2 Rev o ca ti on of Perm it 16. 8. 11 12
17. 8. 73 3 Mod i fic a ti on of Perm it 16. 8. 11 13
17. 8. 73 4 Transfer of Pe rm it 16. 8. 11 14

Sub-ch apt e r 8 – Preve n t i o n o f Signif i ca nt D e teriora t i on of A i r Q u al ity
17. 8. 80 1 D e finit i o n s 16. 8. 94 5
17. 8. 80 2 Incorp orat io n by Referen c e 16. 8. 94 6
17. 8. 80 4 Am bient A i r I n crem ents 16. 8. 94 7
17. 8. 80 5 Am bient A i r Ceil in gs 16. 8. 94 8
17. 8. 80 6 Restric t i ons o n A r ea C l assif i cat io ns 16. 8. 94 9
17. 8. 80 7 Excl usi ons Fr o m Increm ent Cons um ption 16. 8. 95 0
17. 8. 80 8 Redes i g n at io n 16. 8. 95 1
17. 8. 80 9 Stack H e ig hts 16. 8. 95 2
17. 8. 81 8 Revi ew of Ma jor Sta t i onary Sources an d Maj o r M odifi cati o n

– Sourc e A p pl ica b il ity a nd E x em ptions 16. 8. 95 3
17. 8. 81 9 Con t rol Tec h n o lo gy Re view 16. 8. 95 4
17. 8. 82 0 Source Im pact A n aly s is 16. 8. 95 5
17. 8. 82 1 A i r Q u ali t y M ode ls 16. 8. 95 6
17. 8. 82 2 A i r Q u ali t y A n aly s is 16. 8. 95 7
17. 8. 82 3 Source I n form ati o n 16. 8. 95 8
17. 8. 82 4 A ddit i o n al Im pac t A n a l y s es 16. 8. 95 9
17. 8. 82 5 Sources Im pacti ng Fe dera l Class I A r eas – A d d i t i o n al 16. 8. 96 0
17. 8. 82 6 Publi c Part ici p at io n 16. 8. 96 1
17. 8. 82 7 Source O b li ga tio n 16. 8. 96 2
17. 8. 82 8 Inno vat i v e C o ntrol Te ch nol ogy 16. 8. 96 3

Sub-ch apt e r 9 – Perm it Re qu irem ents for Major Stationary Sources or Ma j o r M o difi cati ons Locat e d Wit h i n Nonat t ai nm ent Areas
17. 8. 90 1 D e finit i o n s 16. 8. 17 01
17. 8. 90 2 Incorp orat io n by Referen c e 16. 8. 17 02
17. 8. 90 4 When Air Q u ality Prec ons truct i o n Perm it Req u ire d 16. 8. 17 03
17. 8. 90 5 A ddit i o n al C o ndi ti ons of A i r Q u ali t y Preconstr uct i o n Pe rm it 16. 8. 17 04
17. 8. 90 6 Basel i ne for D e term ining Cr edi t for Em issions an d A i r Q u ali t y O ffsets 16. 8. 17 05

Sub-ch apt e r 1 0
– Preco nstru c ti on Perm it Requ irem ents for Ma jor Sta t i onary So urces or Ma jor Mo dific a ti ons Loca ted Wit h i n Atta inm e nt or Uncl assifie d Areas
17. 8. 10 01 D e finit i o n s 16. 8. 18 01
17. 8. 10 02 Incorp orat io n by Referen c e 16. 8. 18 02
17. 8. 10 04 When Air Q u ality Prec ons truct i o n Perm it Req u ire d 16. 8. 18 03
17. 8. 10 05 A ddit i o n al C o ndi ti ons of A i r Q u ali t y Preconstr uct i o n Pe rm it 16. 8. 18 04
17. 8. 10 06 Revi ew of Sp ecifie d So urce s for A i r Q u al ity Im pact 16. 8. 18 05
17. 8. 10 07 Basel i ne for D e term ining Cr edi t for Em issions an d A i r Q u ali t y O ffsets 16. 8. 18 06

Sub-chapt e r 11 – Visibili ty Im pact Assessm ent
17. 8. 11 01 D e finit i o n s 16. 8. 10 02
17. 8. 11 02 Incorp orat io n by Referen c e 16. 8. 10 09
17. 8. 11 03 A ppli c a b il ity

– V i si bil ity R e qu irem ents 16. 8. 10 01
17. 8. 11 06 Visibi lity Im p act An aly s is 16. 8. 10 03
17. 8. 11 07 Visibi lity M o dels 16. 8. 10 04
17. 8. 11 08 N o tific ati o n o f Perm it A ppli cati o n 16. 8. 10 05
17. 8. 11 09 A dverse Im pact of Fe dera l Land Ma na ge r 16. 8. 10 06
17. 8. 11 10 Visibi lity M o nit o rin g 16. 8. 10 07
17. 8. 11 11 A ddit i o n al Im pac t A n a l y s is 16. 8. 10 08

Perm it Nu m b er : OP2655- 00 A- 3 Date of Decision:05/21/0 3

E ffective Date: 06/21/03Sub-chapt e r 12 – Operat ing Perm it Program
17. 8. 12 01 D e finit i o n s 16. 8. 20 02
17. 8. 12 02 Incorp orat io n by Referen c e 16. 8. 20 03
17. 8. 12 03 A i r Q u ali t y O p erat in g Perm it Program O v erview 16. 8. 20 01
17. 8. 12 04 A i r Q u ali t y O p erat in g Perm it Program A ppli cab il ity 16. 8. 20 04
17. 8. 12 05 Req u irem ents for Tim e ly and C o m p lete A i r Q u al ity Perm it A ppli cat io ns 16. 8. 20 05
17. 8. 12 06 Inform ation R e qu ired for A i r Q u ali t y O p er ati ng Perm it A ppli cat io ns 16. 8. 20 06
17. 8. 12 07 Certifi cat io n o f Truth, A ccur acy , an d Com p le ten e ss 16. 8. 20 07
17. 8. 12 10 G e neral Re qui rem e nts for A i r Q u ali t y O p er ati ng Perm it Cont en t 16. 8. 20 08
17. 8. 12 11 Req u irem ents for A i r Q u ali t y O p erati ng P e rm it Con t en t Rela ti ng to
Em ission Lim itat i o n s a n d St and a rds, an d O t her Re qu ire m ents 16. 8. 20 09
17. 8. 12 12 Req u irem ents for A i r Q u ali t y O p erati ng P e rm it Con t en t Rela ti ng
to Mo nit o rin g , Rec o rdk e e p in g a nd Rep o rti n g 16. 8. 20 10
17. 8. 12 13 Req u irem ents for A i r Q u ali t y O p erati ng P e rm it Con t en t Rela ti ng to
Com p liance 16. 8. 20 11
17. 8. 12 14 Req u irem ents for A i r Q u ali t y O p erati ng P e rm it Con t en t Rela ti ng to th e Perm it Shiel d a nd Em ergenci e s 16. 8. 20 12
17. 8. 12 15 Req u irem ents for A i r Q u ali t y O p erati ng P e rm it Con t en t Rela ti ng
to O p erati o n a l Flex ibi l i t y 16. 8. 20 13
17. 8. 12 20 A i r Q u ali t y O p erat in g Perm it Issua n c e , R e new a l

, R e o p e ni ng an d
Mod i fic a ti on 16. 8. 20 14
17. 8. 12 21 O p erati o n Wit h o u t a n A i r Q u al ity O p era t i ng Perm it and A ppl ica t i on S h ie ld 16. 8. 20 15
17. 8. 12 22 G e neral A i r Q u al ity O p era t i ng Perm its 16. 8. 20 16
17. 8. 12 23 Tem porary A i r Q u ali t y O p er ati ng Perm its 16. 8. 20 17
17. 8. 12 24 Addit i o n al Re quirem e nts fo r Operati o n a l Flexi b i lity a n d Air Qua lity
O p erati n g Perm it Cha nges t h at do n o t Re quire Re visi o n s 16. 8. 20 18
17. 8. 12 25 A ddit i o n al Re quirem e nts fo r A i r Q u ali t y O p erati n g Perm it Am end m ents 16. 8. 20 19
17. 8. 12 26 A ddit i o n al Re quirem e nts fo r Min o r A i r Q u al ity O p era t i ng Perm it
Mod i fic a ti ons 16. 8. 20 20
17. 8. 12 27 A ddit i o n al Re quirem e nts fo r Signif i ca nt A i r Q u ali t y O p erat in g Perm it
Mod i fic a ti ons 16. 8. 20 21
17. 8. 12 28 A ddit i o n al Re quirem e nts fo r A i r Q u ali t y O p erati n g Perm it Rev o ca tio n, Reo p en in g a n d Re vis i o n for Caus e 16. 8. 20 22
17. 8. 12 31 N o tic e of T e rm inatio n, Mo dific a ti on , or Rev o ca ti on an d Re issua n c e by the A d m i nistrator for Ca u s e 16. 8. 20 23
17. 8. 12 32 Publi c Part ici p at io n 16. 8. 20 24
17. 8. 12 33 Perm it Revie w by the A d m i nis t rator an d A ffected St ate s 16. 8. 20 25
17. 8. 12 34 A c id R a i n

– Perm it Reg u la ti on 16. 8. 20 26

Cha p ter 80
– Air and Water Quali t y – T a x Certifi cat io n Sub-ch apt e r 1 – Ta x C e rtific ati on f o r Pol l u tio n C o n t rol E qui pm ent
17. 80 .1 01 D e finit i o n s 16. 9. 10 1
17. 80 .1 02 A ppli cat io n fo r Certifi cat io n as A i r or Wa t e r Poll ut io n E qui pm ent 16. 9. 10 2
17. 80 .1 03 Elig ib ili ty Cri t eria 16. 9. 10 3
17. 80 .1 04 A pport i o n m e n t Proce dures 16. 9. 10 4
17. 80 .1 05 Com p liance 16. 9. 10 5
17. 80 .1 06 Inform al Conf erenc e 16. 9. 10 6

Perm it Nu m b er : OP2655- 00 A- 4 Date of Decision:05/21/0 3

E ffective Date: 06/21/03Permit Number: OP2655-01 B- 1 Date of Decision: 05/21/03
Effective Date: 06/21/03 Appendix B - INSIGNIFICANT EMISSION UNITS

Disclaimer: The information in this appendix is not State or Federally enforceable, but is presented to assist CFAC, the permitting authority, inspectors, and the public.

Pursuant to ARM 17.8.1201(22)(a), an insignificant em ission unit means any activity or emission unit located within a source that: (i) has a potential to emit less than 5 tons per year of any regulated pollutant; (ii) has a potential to emit less than 500 pounds per year of lead; (iii) has a potential to emit less than 500 pounds per year of hazardous air pollutants listed pursuant to sectio n 7412 (b) of the FCAA; and (iv) is not regulated by an applicable requirement, other than a generally applicable requirement that applies to all emission units subject to Subchapter 12.

List of Insignificant Activities:

The following table of insignificant sources and/or acti vities were provided by CFAC. Because there are no requirements to update such a list, the emission units and/or activities may change from those specified in the
table.

Emission Unit ID Description

IEU03 Collector Bar Shotblasting - CR02

IEU04 Anode Debris Storage - CR05

IEU05 Anode Abrader - CR06

IEU06 Shed 11 Pot Rebuild / Masonry Mixer - CR08

IEU07 Diesel Storage Tanks - MP03

IEU08 Natural Gas Space Heaters - MP06

IEU09 Open Burning - MP10

IEU10 Plant Site Sanitary Landfill - MP13

IEU11 Propane Storage - MP14

IEU12 Waste Oil Heat Recovery - MP18

IEU13 MSDS Chemicals / Plant-wide Usage - MP19

IEU14 Carpenter Shop CyclonePermit Number: OP2655-01 C- 1 Date of Decision: 05/21/03
Effective Date: 06/21/03 Appendix C - DEFINITIONS and ABBREVIATIONS

"Act" means the Clean Air Act, as amended, 42 U.S. 7401, et seq

.

"Administrative permit amendment" means an air quality operating permit revision that:

(a) Corrects typographical errors;

(b) Identifies a change in the name, address or phone number of any person identified in the air quality operating permit, or identifies a similar minor administrative change at the source;

(c) Requires more frequent moni toring or reporting by CFAC;

(d) Requires changes in monitoring or reporting requirements that the Department deems to be no less stringent than current monitoring or reporting requirements;

(e) Allows for a change in ownership or operational control of a source if the Department has determined that no other change in the air qual ity operating permit is necessary, consistent with ARM 17.8.1225; or

(f) Incorporates any other type of change that the Department has determined to be similar to those revisions set forth in (a)-(e), above.

"Applicable requirement" means all of the following as they apply to emission units in a source requiring an air quality operating permit (including requirements that have been promulgated or approved by the Department or the administrator through rule making at the time of issuance of the air quality operating permit, but have future-effective compliance dates, provided that such requirements apply to sources covered under the operating permit).

(a) Any standard, rule, or other requirement, including any requirement contained in a consent decree or judicial or administrative order entered into or issued by the Department, that is contained in the Montana state implementation plan approved or promulgated by the administrator through rule making under Title I of the FCAA;

(b) Any federally enforceable term, condition or other requirement of any air quality preconstruction permit issued by the Department under subchapters 7, 8, 9 and 10 of this chapter, or pursuant to regulations approved or promulgated through rule making under Title I of the FCAA, including parts C and D;

(c) Any standard or other requirement under sec. 7411 of the FCAA, including sec. 7411(d);

(d) Any standard or other requirement under sec. 7412 of the FCAA, including any requirement concerning accident prev ention under sec. 7412(r)(7), but ex cluding the conten ts of any risk management plan require d under sec. 7412(r);

(e) Any standard or other requirement of the acid rain program under Title IV of the FCAA or regulations promulgated thereunder;

(f) Any requirements established pursuant to sec. 7661c(b) or sec. 7414(a)(3) of the FCAA;

(g) Any standard or other requirement governing solid waste incineration, under sec. 7429 of the FCAA;

(h) Any standard or other requirem ent for consumer and commercial products, under sec. 7511b(e) of the FCAA;Permit Number: OP2655-01 C- 2 Date of Decision: 05/21/03
Effective Date: 06/21/03 (i) Any standard or other re quirement for tank vessels, unde r sec. 7511b(f) of the FCAA;

(j) Any standard or other requirement of the regulations promulgated to protect stratospheric ozone under Title VI of the FCAA, unless the administrator determines that such requirements need not be contained in an air quality operating permit;

(k) Any national ambient air quality standard or increment or visibility requirement under part C of Title I of the FCAA, but only as it would apply to temporary sources permitted pursuant to sec. 7661c(e) of the FCAA; or

(l) Any federally enforceable term or condition of any air quality open burning permit issued by the Department under subchapter 6.

"Department" means the Montana Department of Environmental Quality.

"Emission unit" means any part or activity of a stationary source that emits or has the potential to emit any regulated air pollutant or any pollutant listed under sec. 7412(b) of the FCAA. This term is not meant to alter or affect the definition of the term "unit" for purposes of Title IV of the FCAA.

“Excess emissions” means any visible emissions from a stack or source, viewed during the visual surveys, believed to exceed the visible emissions during normal operating conditions.

“Excess fugitive emissions” means any visible emissions that leave the plant site boundaries.

"FCAA" means the Federal Clean Air Act, as amended.

"Federally enforceable" means all limitations and conditions which are enforceable by the administrator, including those requirements developed pursuant to 40 CFR Parts 60 and 61, requirements within the Montana State Implementation Plan, and any permit requirement established pursuant to 40 CFR 52.21 or under regulations approved pursuant to 40 CFR Part 51, Subpar t I, including operating permits issued under an EPA approved program that is incorporated into the Montana State Implementation Plan and expressly requires adherence to any permit issued under such program.

"Fugitive emissions" means those emissions that could not reasonably pass through a stack, chimney, vent, or other functionally equivalent opening.

"General air quality operating permit" or "general permit" means an air quality operating permit that meets the requirements of ARM 17.8.1222, covers multiple sources in a source category , and is issued in lieu of individual permits being issued to each source.

"Hazardous air pollutant" means any air pollutant listed as a hazardous air pollutant pursuant to section 112(b) of the FCAA.

"Non-federally enforceable requirement" means the following as they apply to emission units in a source requiring an air quality operating permit.

(a) Any standard, rule, or other requirement, including any requirement contained in a consent decree, or judicial or administrative order entered into or issued by the Department, that is not contained in the Montana State Implementation Plan, approved or promulgated by the administrator through rule making under Title I of the FCAA;

(b) Any term, condition or other requirement contained in any air quality preconstruction permit issued by the Department under subchapters 7, 8, 9 and 10 of this chapter that is not federally enforceable;

(c) Does not include any Montana ambient air qualit y standard contained in Subchapter 2 of this chapter.Permit Number: OP2655-01 C- 3 Date of Decision: 05/21/03
Effective Date: 06/21/03 "Permittee" means the owner or operator of any source subject to the permitting requirements of this subchapter, as provided in ARM 17.8.1204, that holds a valid air quality operating permit or has submitted a timely and complete permit application for issuance, renewal, amendment, or modification pursuant to this subchapter.

"Regulated air pollutant" means the following:

(a) Nitrogen oxides or any volatile organic compounds.

(b) Any pollutant for which a national ambient air quality standard has been promulgated.

(c) Any pollutant that is subject to any standard promulgated under sec. 7411 of the FCAA.

(d) Any Class I or II substance subject to a standard promulgated under or established by Title VI of
the FCAA.

(e) Any pollutant subject to a standard or other requirement established or promulgated under sec. 7412 of the FCAA, including but not limited to the following:

(i) Any pollutant subject to requirements under sec. 7412(j) of the FCAA. If the administrator fails to promulgate a standard by the date established in section 7412(e) of the FCAA, any pollutant for which a subject source would be major shall be considered to be regulated on the date 18 months after the applicable date established in section 7412(e) of the FCAA.

(ii) Any pollutant for which the requirements of section 7412(g)(2) of the FCAA have been met but only with respect to the individual source subject to sec. 7412(g)(2) requirement.

"Responsible official" means one of the following:

(a) For a corporation: a president, secretary, treasur er, or vice-president of th e corporation in chargeof a principal business function, or any other person who performs similar policy or decisionmaking functions for the corporation, or a duly au thorized representative of such person if the representative is responsible for the overall oper ation of one or more manufacturing, production, or operating facilities applying fo r or subject to a permit and either:

(i) The facilities employ more than 250 persons or have gross annual sales or expenditures exceeding $25 million (in second quarter 1980 dollars); or

(ii) The delegation of authority to such representative is approved in advance by the Department.

(b) For a partnership or sole pr oprietorship: a general partner or the proprietor; respectively.

(c) For a municipality, state, federal, or other public agency: either a principal executive officer or ranking elected official. For the purposes of this part, a principal executive officer of a federal agency includes the chief executiv e officer having responsibility for the overall operations of a principal geographic unit of the agency (e.g., a regional administrator of the environmental protection agency).

(d) For affected sources: the designated representative in so far as actions, standards, requirements, or prohibitions under Title IV of the FCAA or the regulations promulgated thereunder are concerned, and the designated representative for any other purposes under this subchapter.Permit Number: OP2655-01 C- 4 Date of Decision: 05/21/03
Effective Date: 06/21/03 Abbreviations:

ARM Administrative Rules of Montana ASTM American Society of Testing Materials BACT Best Available Control Technology BDT bone dry tons
BTU British Thermal Unit CFR Code of Federal Regulations
CO carbon monoxide DEQ Department of Environmental Quality dscf dry standard cubic foot dscfm dry standard cubic foot per minute EEAP Emergency Episode Action Plan EPA U.S. Environmental Protection Agency EPA Method Test methods contained in 40 CFR 60, Appendix A
EU emission unit
FCAA Federal Clean Air Act gr grains HAP hazardous air pollutant IEU insignificant emission unit
Mbdft thousand board feet Method 5 40 CFR 60, Appendix A, Method 5 Method 9 40 CFR 60, Appendix A, Method 9
MMbdft million board feet
MMBTU million British Thermal Units
NO

x oxides of nitrogen
NO 2 nitrogen dioxide
O 2 oxygen Pb lead PM particulate matter PM10 particulate matter less than 10 microns in size psi pounds per square inch
scf standard cubic feet
SIC Source Industrial Classification
SO 2 sulfur dioxide
SO

x oxides of sulfur
tpy tons per year U.S.C. United States Code
VE visible emissions VOC volatile organic compoundPermit Number: OP2655-01 D- 1 Date of Decision: 05/21/03
Effective Date: 06/21/03 Appendix D - NOTIFICATION ADDRESSES

Compliance Notifications:

Montana Department of Environmental Quality Permitting and Compliance Division Air & Waste Management Bureau
P.O. Box 200901 Helena, MT 59620-0901

United States EPA Air Program Coordinator Region VIII, Montana Office
10 W. 15 th Suite 3200 Helena, MT 59626

Permit Modifications:

Montana Department of Environmental Quality Permitting and Compliance Division Air & Waste Management Bureau
P.O. Box 200901 Helena, MT 59620-0901

Office of Partnerships an d Regulatory Assistance Air and Radiation Program US EPA Region VIII 8P-AR
999 18 th Street, Suite 500 Denver, CO 80202-2466Permit Number: OP2655-01 E- 1 Date of Decision: 05/21/03
Effective Date: 06/21/03 1.

2.

3. Appendix E - AIR QUALITY INSPECTOR INFORMATION

Disclaimer: The information in this appendix is not State or Federally enforceable but is presented to assist CFAC, permitting authority, inspectors, and the public.

Direction to Plant:

CFAC is adjacent to the community of Columbia Falls, Montana, with a physical address of 2000
Aluminum Drive.

Safety Equipment Required:

Safety Equipment required to enter the facility are: hard hat, protective eyewear, and safety shoes or boots. Additional personal protective equipment may be necessary in certain areas, such as respiratory protection.

Facility Plot Plan:

A copy of the facility plot plan was submitted with the operating permit application on June 12, 1996.Permit Number: OP2655-01 F- 1 Date of Decision: 05/21/03
Effective Date: 06/21/03 Appendix F - CFAC MACT IMPLEMENTATION PLAN

Although the hard copy of Appendix F have been removed from the permit, the contents of Appendix F, CFAC MACT Implementation Plan remain as applicable requirements as stated in the Title V Operating Permit #OP2655-01. To receive a hard copy of this appendix, please contact one of the following:

The Department of Environmental Quality Permitting and Compliance Division Air and Waste Management Bureau
1520 E. Sixth Ave.
P.O. Box 200901 Helena, Montana 59620-0901 Bureau Phone # : (406) 444-3490

OR

Columbia Falls Aluminum Company, LLC
2000 Aluminum Drive Columbia Falls, Montana 59912 Phone # : (406) 892-8211Permit Number: OP2655-01 G- 1 Date of Decision: 05/21/03
Effective Date: 06/21/03 Appendix G - CFAC MACT QUICK REFERENCE GUIDE

Although the hard copy of Appendix G have been removed from the permit, the contents of Appendix G, CFAC MACT Quick Reference Guide remain as applicable requirements as stated in the Title V Operating Permit #OP2655-01. To receive a hard copy of this appendix, please contact one of the following:

The Department of Environmental Quality Permitting and Compliance Division Air and Waste Management Bureau
1520 E. Sixth Ave.
P.O. Box 200901 Helena, Montana 59620-0901 Bureau Phone # : (406) 444-3490

OR

Columbia Falls Aluminum Company, LLC
2000 Aluminum Drive Columbia Falls, Montana 59912 Phone # : (406) 892-8211Permit Number: OP2655-01 H- 1 Date of Decision: 05/21/03
Effective Date: 06/21/03 Appendix H - STARTUP, SHUTDOWN AND MALFUNCTION PLAN (SSM)

Although the hard copy of Appendix H have been removed from the permit, the contents of Appendix H, Startup, Shutdown and Malfunction Plan (SSM) remain as applicable requirements as stated in the Title V Operating Permit #OP2655-01. To receive a hard copy of this appendix, please co ntact one of the following:

The Department of Environmental Quality Permitting and Compliance Division Air and Waste Management Bureau
1520 E. Sixth Ave.
P.O. Box 200901 Helena, Montana 59620-0901 Bureau Phone # : (406) 444-3490

OR

Columbia Falls Aluminum Company, LLC
2000 Aluminum Drive Columbia Falls, Montana 59912 Phone # : (406) 892-8211Permit Number: OP2655-01 I-1 Date of Decision: 05/21/03
Effective Date: 06/21/03 Appendix I - CFAC POM Compliance Schedule

CFAC has been shut down since January 2001. However, at the time of shutdown, CFAC was out of compliance with the applicable requirement ARM 17.8.3 42 ((40 CFR 63.843(a) and 63.846(b)). Therefore, CFAC was/is required to submit a narrative description of how the source will achieve compliance and provide a schedule of compliance (ARM 17.8.1206).

1. CFAC shall submit a summary and status report of the POM testing and compliance issues to the Department and EPA within 60 days after final issuance of Permit #OP2655-00. The report shall include the facility’s description to either request EPA to revise the existing VSS2 POM emission limit, and all supporting documentation that is the basis for the decision. CFAC shall submit detailed progress reports quarterly to the Department and EPA.

2. Within 60 days after final issuance of Permit #OP2655-00, CAFC shall submit to the Department a plan, including a schedule, describing actions CFAC will take leading to compliance with 40 CFR 63, Subpart LL (Primary Aluminum Reduction Plants MACT).

3. Within 180 days after startup (of the first pot), CFAC must demonstrate compliance with the VSS2
POM emission limit in effect at that time.Permit Number: OP2655-01 J- 1 Date of Decision: 05/21/03
Effective Date: 06/21/03 Appendix J - POTLINE ROOF VENT OPACITY COMPLIANCE DEMONSTRATION

Proposal to Perform Method 9 Visu al Observations on Potroom Roofs

CFAC proposes to perform Method 9 visual observat ions on portions of each potline’s roof in order to demonstrate compliance with ARM 17.8.332. This is similar in concept to EPA Method 14 where a manifold extracts emissions from either a 35-meter (115 feet) length of a roofline, or from 8% length of the roofline to determine compliance with emission standards for the entire potline. CFAC proposes to perform Method 9 observations on the following roofs:

Approximately 50% of Room 1 length (457 ft, representing potline 1) Approximately 35% of Room 3 length (321 ft, representing potline 2) Approximately 35% of Room 6 length (321 ft, representing potline 3) Approximately 35% of Room 7 length (321 ft, representing potline 4) Approximately 35% of Room 10 length (321 ft, representing potline 5)

Specifically, CFAC proposes to demonstrate compliance with ARM 17.8.332 by performing quarterly Method 9 visual observations as described below. Each Method 9 observation period will be a minimum of 6 minutes unless any one reading is greater than 10%; then the observation period will be a minimum of 20 minutes.

Room 1 (potline 1): Method 9 observations will be taken by an observer located on the Room 2 roof, looking westward. Method 9 observations will be taken at more than one location along the north 50% of Room 1. The Method 9 observation results will be averaged to produce a final result.

Room 3 (potline 2): Method 9 observations will be taken by an observer located on the staircase to the Room 4 roof. The west plant ore silos will serve as a backdrop for the Method 9 observations. The ore silos provide a backdrop, which is approximately 321 feet, or approximately 35% of the total length of the Room 3 roof. Method 9 observations will be taken at more than one location along the north 35% of Room 3. The Method 9 observation results will be averaged to produce a final result.

Room 6 (potline 3): Method 9 observations will be taken by an observer located on the staircase to the Room 5 roof. The east plant ore silos will serve as a backdrop for the Method 9 observations. The ore silos provide a backdrop, which is approximat ely 321 feet, or approximately 35% of the total length of the Room 6 roof. Method 9 observations will be taken at more than one location along the north 35% of Room 3. The Method 9 observation results will be averaged to produce a final result.

Room 7 (potline 4): Method 9 observations will be taken by an observer located on the staircase to the Room 8 roof. The east plant ore silos will serve as a backdrop for the Method 9 observations. The ore silos provide a backdrop, which is approximat ely 321 feet, or approximately 35% of the total length of the Room 7 roof. Method 9 observations will be taken at more than one location along the north 35% of Room 7. The Method 9 observation results will be averaged to produce a final result.

Room 10 (potline 5): Method 9 observations will be taken by an observer located on the staircase to the Room 9 roof, looking eastward. Method 9 observations will be taken at more than one location along the north 35% of Room 10. The Method 9 observation results will be averaged to produce a
final result.

CFAC shall perform daily visual surveys in a manner similar to the Method 9 procedures outlined above and it is understood by all parties that these daily visual observations are not Method 9
observations.Permit Number: OP2655-01 K- 1 Date of Decision: 05/21/03
Effective Date: 06/21/03 Appendix K - Pollution Control Device Inspection and Maintenance Plan

Although the hard copy of Appendix K have been removed from the permit, the contents of Appendix K Pollution Control Device Inspection and Maintenance Plan remain as applicable requirements as stated in the Title V Operating Permit #OP2655-01. To receive a hard copy of this appendix, please contact one of the following:

The Department of Environmental Quality Permitting and Compliance Division Air and Waste Management Bureau
1520 E. Sixth Ave.
P.O. Box 200901 Helena, Montana 59620-0901 Bureau Phone # : (406) 444-3490

OR

Columbia Falls Aluminum Company, LLC
2000 Aluminum Drive Columbia Falls, Montana 59912 Phone # : (406) 892-8211Permit Number: OP2655-01 L- 1 Date of Decision: 05/21/03
Effective Date: 06/21/03 Appendix L - 62 FR 52383