## U

. S

. En v i r o n m e n t a l P r o t ec t

i o n Ag en c y R e g ion 9 C le a n A i rA c t P e r m i t

S u p p l e m e n t a l Em issi o n s An a l y sis
– F C PP S C R P r o

j ec t F o u r C o r n e r s P o w e r P l a n t P ro p o s e d PS D P e r m i t NN 1 4 -0 1 a n d T r i b a l M in o r N S R P e r m i t T- 0 0 2

- NN J uly 20 14


### In t r o du c t i o n T h e U.S. E nvi r onm e nt a l P r ot ec tion Age n cy , R eg io n9 ( E P A ) c ondu c t e d a s uppl e m e nt a l e mi s s io n s a n a l y s i s to th e e mi ss i o n s a n a ly s i s c o n du c t e d b y th e A ri z on a P ubli c S e r

v i ce C omp a n y

( A P S) i nit s A p ril 2014 A ppli ca ti o n f o r a Pr e v e ntio no f

Si g ni f i ca nt D e t e rio r a ti o n P e r mit f o r th e a d dition o f s e l ec tiv e ca t a l y ti c r e du c tion (S C R ) s y s t e m s to Unit s 4 a nd 5 a t th e F ou r C o r n e r s P o we r P l a n t ( F C PP ). T h e r evi ew p r ovid e d b y A P S d e m o n s t r a t e d th a t th e F C P P S C R Pr oj ec t w oul donl y ca u s e a s i gni f i ca nt n e t e m i ss i on s in c r ea s e f o r e m i ss i on s o f s ul f

u ri c ac id mi s t (S AM

). I n r e vi e w

in g A P S’ s a ppli ca ti o n, E P Ad e t e r min e d th a t oth e rth e r e we r e ce r t ain in s t a n ce s wh e r e e m i ss i o n s c ou l d h a v e b e ca l c ul a t e d s li g htly d i ff e r e ntly , but did n ot a ff

ec t th e ov e r a ll c on c l u s i on r ega r din g wh e th e r th e F C PP S C R Pr oj ec t ca u s e d a s i gni f i ca nt e m i s s io n s in c r ea s e a nd a s i gni f i ca nt n e t e mi s s i on s in c r ea s e f o r ap a r ti c ul a r pollut a nt. T h e m a j o rity o f th e di ff e r e n ce s b e t

wee n th i s a n a

l y s i s a nd th e A ppli ca nt ’ s i s th e e mi ss i on s f ac to r s c h o s e n wh e n CE M S a nd p e r f o r m a n ce t e s t d a t a we r e n ot a

v ail a bl e , a s we ll a s min o rdi f f e r e n ce s in r ound i n g . T hi s a n a l y s i s i s s imply t o illu s t r a t e a n a lt e r n a tiv e ca l c ul a tion m e thod a nd i s no t int e nd e d t o s u p e rs e d e th e A ppli ca nt’ s a n a l y s i s.

### S u mm a r

y o f P SD A

pp l i ca b ili ty – S upp le m e nt al An aly s i s S t e p 1 – E m i ss io n s I n c r ea s e s f r o m th e Pr ojec t

T a b l e 1 B a se li n e A c t u a l E m i ss i o n f o r E x i s ti n g U n it s 4 a nd 5
Emiss i on Un it NO X SO 2 PM PM 10 PM 2 .5 CO VOC H 2 SO 4 L e ad G H Gs ( CO 2 e) U n i t 4 12 , 04 4 3 , 83 6 450. 8 904. 6 735. 9 692. 9 83. 1 3.4 1 12.3 3 5 , 028 , 96 0 U n i t 5 11 , 98 6 4 , 53 7 237. 9 717. 5 594. 2 692. 4 83. 1 5.6 0 12.3 2 5 , 029 , 16 6 T o t a ls 24 , 0 29 8 , 37 3 688. 7 1 , 62 2 1 , 33 0 1 , 38 5 166. 2 9.0 1 24.6 5 10 , 0 5 8 , 1 2 6

T a b l e 2 P r oj e c t e d A c t u a l E m i s s i o n s f o r N e w a nd E x i s ti n g E qu i p m e n t
Emiss i on Un it NO X SO 2 PM PM 10 PM 2 .5 CO VOC H 2 SO 4 L e ad G H Gs ( CO 2 e) U n i t 4 2 , 39 1 3 , 84 9 366. 0 930. 9 788.1 7 695. 1 83. 4 106. 2 12.3 7 5 , 045 , 30 3 U n i t 5 2 , 39 1 4 , 55 1 366. 0 930.9 2 788.1 7 695. 1 83. 4 106. 2 12.3 7 5 , 048 , 81 7 T r u c k T r a f f ic

- D e l i v e r y o f S o r b e n t 0.0 0 0.0 0 0.1 0 0.0 2 0.0 1 0.0 0 0.0 0 0.0 0 0.0 0 0.0 0 T r u c k T r a f f ic

- D e l i v e r y o f S C R R e a g e n t 0.0 0 0.0 0 0.0 9 0.0 2 0.0 0 0.0 0 0.0 0 0.0 0 0.0 0 0.0 0 Sil o f o r Dr y S o r b e n t S to r a g e 0.0 0 0.0 0 0.0 9 0.0 9 0.0 9 0.0 0 0.0 0 0.0 0 0.0 0 0.0 0 Sil o f o r S C R R e a g e n t S to r a g e 0.0 0 0.0 0 0.2 1 0.2 1 0.2 1 0.0 0 0.0 0 0.0 0 0.0 0 0.0 0 T o t a ls 4 , 78 3 8 , 40 0 73 3 1 , 86 2 1 , 57 7 1 , 39 0 166. 8 212. 4 24.7 4 10 , 0 9 4 , 1 2 0

T a b l e 3 Su m m a r y E m i s s i o n s I n cre a ses f r o m t h e P r oj e c t
Emiss i on Un it NO X SO 2 PM PM 10 PM 2 .5 CO VOC H 2 SO 4 L e ad G H Gs ( CO 2 e) B a se l i n e E m i ss i o n s 24 , 02 9 8 , 37 3 688. 7 1 , 62 2 1 , 33 0 1 , 38 5 166. 2 9. 0 24.6 5 10 , 058 , 1 26 Pr o j e c t e d Ac t u a l E m i ss i o n s 4 , 78 3 8 , 40 0 732. 5 1 , 86 2 1 , 37 0 1 , 39 0 166. 8 212. 4 24.7 4 10 , 094 , 1 20 E m i s s i on I n cr e a s e s - 19 , 2 46 27 43. 8 24 0 24 7 5 0. 6 203. 4 0.0 9 35 , 99 4 Sig n i f ic a n t E m i s s i on s R at e 40 40 25 15 10 10 0 40 7 0. 6 75 , 00 0 Sig n i f i c a n t E m i s s i on I ncr e as e No No Y e s Y e s Y e s No No Y es No No *N o t e : F o r a n e x i s t i n g maj o r s tat i o n a r y s o u r c e u n de r g o ing a m o d i f i c at i o n su c h a s t his , P S D pe r m i t ti ng f o r G H Gs w ill o cc u r o nl y w he n t he p r o j e c t wo uld a l s o c a use a n e t in c r e a se in G H G e m is s i o ns o f 75 , 000 t p y o r m o r e o n a CO 2 e b a sis a nd gre a t e r t h a n 0 t p y o n a ma s s b a sis

. See 40 C F R 52.21 ( b )( 23 ) a nd ( 49 )( i v ) ; P S D a nd T i t le V P e r m i tt i n g Gu i d a n c e f o r Gr e e n h o use G a ses ( Ma r c h 2011 ) at 13-15

.

### S u mm a r

y o f P SD A

pp l i ca b ili ty – S upp le m e nt al An aly s i s S t e p 2 – N e t E m i ss io n I n c r ea s e C o nt e mp o r a n e o u s E m i ss io n s I n c r ea s e s a n d De c r e a s e s
T a b l e 4 B a se li n e A c t u a l E m i ss i o n s
Emiss i on Un it PM PM 10 PM 2 .5 H 2 SO 4 U n i t 1 69. 8 123. 8 96. 6 0. 2 U n i t 2 81. 6 153. 4 153. 4 0. 6 U n i t 3 102. 4 241. 8 241. 8 0. 4 A u xili a r y B o il e r 0. 0 0. 0 0. 0 0. 0 T o t a ls 253. 8 518. 9 491. 7 1. 2
T a b l e 5 P r oj e c t e d A c t u a l E m i s s i o n s
Emiss i on Un it PM PM 10 PM 2 .5 H 2 SO 4 U n i t 1 0.0 0 0.0 0 0.0 0 0.0 0 U n i t 2 0.0 0 0.0 0 0.0 0 0.0 0 U n i t 3 0.0 0 0.0 0 0.0 0 0.0 0 A u xili a r y B o il e r 0.9 6 0.9 6 0.9 6 0.0 0 T o t a ls 0.9 6 0.9 6 0.9 6 0.0 0
T a b l e 6 C o n t e m p o r a n e o u s E m i ss i o n s C h a n g e
E m i s s i on U n i t P M PM 10 PM 2 .5 H 2 SO 4 U n i t s 1

- 3

- 253 .8

- 518 .9

- 491 .7

- 1.2 5 A u xili a r y B o il e r 0.9 6 0.9 6 0.9 6 0 T ot a l s - 252 .9
- 518 .0
- 490 .8
- 1.2 5

### S u mm a r

y o f P SD A

pp l i ca b ili ty – S upp le m e nt al An aly s i s
T a b l e 7 S u m m a r y o f

PS D A pp l i c a b ilit y f

o r t h e F C PP S CR

P r oj ec t
P SD A ppl ic a bi l i ty PM PM 10 PM 2 .5 H 2 SO 4 Sig n i f ic a n t e m i ss i o n s i n cr e a s e s f r o m t h e Pr o j e c t 43.8 0 24 0 24 7 203. 4 C o m b i n e d C ont e m po r a n e ou s E m i s s i on s D e cr e a s es - 252 .9

- 518 .0

- 490 .8

- 1.2 5 Sig n i f ic a n t n e t e m i ss i o n s - 209 .1

- 278 .0

- 243 .8 202.1 5 Sig n i f ic a n t e m i ss i on r at e 25 15 10 7 P SD A ppl ic a b le No No No Yes

### E m i ss io n s Da t a

T a b l e 8 M o n t h l y Hea t I n pu t D a t a f o r U n it s 1
- 5 , MM Bt u (f

r o m Ai r P r o g r a m M a r k e t s D a t a )
Unit 1 Unit 2 Unit 3 Unit 4 Unit 5 J a n - 1 1 972090

. 51 6 13089 1 4.8 2 10360 1 1.8 1 48189 78 43687 54 F e b

- 11 11244 5 3.0 3 10307 3 4.3 3 666763

. 64 6 39260 55 44527 98 M a r - 1 1 12275 6 5.5 6 13542 4 1. 7 18010 6 1.1 4 42368 66 42432 54 A p r - 1 1 927974

. 26 6 12819 7 7. 6 18214 1 0.2 7 47200 85 10380 10 M ay - 1 1 11295 5 3.2 6 13317 6 7. 8 19286 8 6. 7 48152 80 17540 94 J un - 1 1 11785 0 0.1 7 845075

. 93 9 16949 2 4. 3 46652 51 41104 98 J u l

- 1 1 11213 4 6.8 8 13813 6 1. 2 18541 8 7. 1 50285 11 46328 86 A u g - 1 1 12579 8 8. 7 12886 4 9.2 2 16217 9 3.0 2 44385 88 30386 07 S e p - 11 11790 3 0.2 6 13726 1 3. 5 18671 6 6.5 1 42621 85 48419 97 Oc t

- 1 1 490617

. 16 3 10550 0 4.9 1 11481 3 6.4 8 16052 41 49387 71 No v- 1 1 67836. 9 7 2 13891 0 8.4 3 14199 1 5.7 4 98638 3 50037 20 D e c - 1 1 10767 1 6.3 7 13038 6 1.2 6 17595 5 5.4 8 49125 82 50884 54 J a n - 1 2 12182 9 0. 6 10343 8 2.0 1 16012 4 6. 7 47528 68 51665 60 F e b

- 12 929907

. 25 7 684297

. 01 2 17351 5 8. 1 44664 24 47687 15 M a r - 1 2 837476 .5 13368 0 2.9 9 167183

. 65 2 32773 07 41395 06 A p r - 1 2 120848

. 50 8 396862

. 8 3 943443

. 69 2 25272 69 23153 97 M ay - 1 2 802448

. 10 4 872440

. 90 9 18170 1 7.5 2 30781 24 28708 13 J un - 1 2 12013 1 8.8 2 12489 1 3.6 6 16681 5 1.6 6 39425 63 39903 95 J u l

- 1 2 10900 0 0.8 8 11655 9 7.3 5 20036 7 6. 6 38563 03 51589 52 A u g - 1 2 10196 3 7. 1 970488

. 79 7 16888 9 5.3 6 31080 86 44745 33 S e p - 12 10250 2 4.0 6 885641

. 11 3 19704 4 4.5 2 51060 82 48951 40 Oc t

- 1 2 13961 7 5. 5 13765 1 7.6 8 19006 8 5.9 6 53157 54 52604 06 No v- 1 2 10341 5 8.8 1 892990

. 73 6 16802 2 0.1 4 43972 83 41521 08 D e c - 1 2 13230 4 5.7 6 11716 7 2.4 9 14574 2 5. 8 50460 99 25220 78 24- Mo n th Ave r a ge ( MM B t u /y r) 11876 0 02. 5 13489 9 59. 1 18626 5 80. 9 48645 0 83. 5 48613 2 2 3T a b l e 9 CE M S D a t a f o r NO X , SO 2 , a n d CO 2 f r o m Ai r M a r k e t s P r o g r a m D a t a
NO X SO 2 CO 2 Unit 4 Unit 5 Unit 4 Unit 5 Unit 4 Unit 5 J a n - 1 1 1204.2 58 1077.4 95 455.36 1 571.18 0 497874

. 136 5 452325

. 181 3 F e b

- 11 921.03 1 1052.1 30 363.68 4 540.97 0 406053

. 831 6 460984

. 802 2 M a r - 1 1 993.86 5 967.56 9 354.79 0 432.69 1 438003

. 674 5 439420

. 285 9 A p r - 1 1 1138.3 35 242.51 0 442.92 8 127.66 3 487452

. 28 9 107431

. 499 9 M ay - 1 1 1178.2 02 393.31 1 376.89 2 186.37 9 497332

. 672 1 181395

. 346 5 J un - 1 1 1172.0 55 971.58 0 360.04 1 356.91 7 482383

. 150 9 425086

. 230 9 J u l

- 1 1 1288.2 40 1151.4 45 392.93 5 316.02 5 519431

. 465 6 479118

. 364 7 A u g - 1 1 1094.5 50 757.42 9 345.55 7 183.44 5 459014

. 209 1 314207

. 584 6 S e p - 11 987.88 8 1239.0 79 317.94 9 351.51 2 440974

. 798 1 500663

. 762 1 Oc t

- 1 1 395.97 9 1257.3 66 149.74 5 509.15 8 165996

. 173 7 510949

. 423 7 No v- 1 1 205.29 3 1286.2 56 102.71 7 547.63 0 102129

. 958 3 516927

. 690 6 D e c - 1 1 1092.2 36 1328.9 88 403.49 2 580.66 5 508392

. 282 2 526587

. 572 2 J a n - 1 2 1099.0 51 1339.2 12 418.09 1 577.32 4 491305

. 725 6 534206

. 987 6 F e b

- 12 1039.4 52 1189.9 08 413.09 5 527.71 0 462087

. 693 3 493910

. 286 1 M a r - 1 2 732.40 2 1026.4 88 276.63 4 443.34 4 338812

. 376 9 428612

. 519 4 A p r - 1 2 598.36 1 566.12 3 182.69 1 237.61 6 261494

. 400 4 239732

. 627 1 M ay - 1 2 779.95 4 631.29 1 196.38 5 254.49 0 318342

. 523 3 296971

. 808 5 J un - 1 2 1016.0 80 927.83 2 225.11 7 295.04 3 407898

. 861 9 412578

. 320 8 J u l

- 1 2 922.64 7 1233.9 55 234.25 1 307.53 3 398776

. 831 8 533303

. 755 3 A u g - 1 2 820.86 8 1098.1 72 175.74 7 274.14 6 321483

. 358 2 462644

. 391 8 S e p - 12 1382.2 68 1230.9 16 310.36 7 338.73 6 527718

. 070 6 506085

. 75 1 Oc t

- 1 2 1421.4 36 1372.2 50 367.71 8 459.17 4 548625

. 488 9 544583

. 024 9 No v- 1 2 1236.0 66 1023.6 37 337.97 6 413.34 6 454484

. 739 8 429815

. 45 9 D e c - 1 2 1366.6 03 606.32 9 468.80 0 240.79 2 521850

. 339 8 260789

. 321 9 24- Mo n th Ave r a ge ( to n s /y r) 12043 . 56 0 11985 . 63 6 3836. 4 8 2 4536. 7 4 5 50289 5 9.5 26 50291 6 5.9 99

### P e r f

o r m a n ce T e s t R e s u l t s
T a b l e 10 F ilt er a b l e P M P er f o r m a n ce T e s t D a t a , l b / M M B t u
Y e a r U n i t 1 U n i t 2 U n i t 3 U n i t 4 U n i t 5 201 1 0.01 8 0.0 3 0.04 8 0.01 1 0.0 1 201 2 0.02 9 0.02 5 0.02 1 0.02 6 0.00 6 A v e r a g e 0.023 5 0.027 5 0.034 5 0.018 5 0.00 8
T a b l e 11 S u lf

u r i c A c i d M i s t P er f

o r m a n ce T es t D a t a , l b / M M B t u
Y e a r U n i t 1 U n i t 2 U n i t 3 U n i t 4 U n i t 5 201 1 0.0000 68 0.0001 8 < 0.0 0 009 4 0.0001 4 0.0002 3



## E m i ss i o n F act o rs
F il t e r a b l e PM 10 

### : 

### · 92 % o f f

il t e r a bl e PM e mi s s ion s ( f

r om p e rf o r m a n ce t e s t

d a t a a bov e )
· Sou r ce : A P- 42 – B i t uminou s a nd Subbi t uminou s C o a l C ombu s t ion, T a bl e 1

. 1

- 6 f

o r a b a ghou s e
F il t e r a b l e PM 2 .5 

### : 

### · 53 % o f f

il t e r a bl e PM e mi s s ion s ( f

r om p e rf o r m a n ce t e s t

d a t a a bov e )
· Sou r ce : A P- 42 – B i t uminou s a nd Subbi t uminou s C o a l C ombu s t ion, T a bl e 1

. 1

- 6 f

o r a b a ghou s e C o nd e n s a b le P M : 

### · 0.02 lb/ MM B t u + Sul f u r i c Ac id T e s t

D a t a ( lb/ MM B t u

)
· Sou r ce : A P- 42 – B i t uminou s a nd Subbi t uminou s C o a l C ombu s t ion, T a bl e 1

. 1

- 5, C PM- T O T , f o r a ll c on tr ol s c ombin e d w

i t h a n F GD c on tr ol, s ul f

u r i c a c id t e s t

d a t a a bov e C a rb o n M o n o xi d e : 

### · 0.028 lb/ MM B t u · Sou r ce : A P- 42 – B i t uminou s a nd Subbi t uminou s C o a l C ombu s t ion, T a bl e 1

. 1

- 3, 0.5 lb/ t on f o r P C d ry bo tt om p r e
- NS P S, 8,776 B t u/ c o a l fr om A ppli c a t ion
V ola t ile O r g a n ic C o m p o u nd s : 

### · 0.003 lb/ MM B t u · Sou r ce : A P- 42 – B i t uminou s a nd Subbi t uminou s C o a l C ombu s t ion, T a bl e 1

. 1

- 19, 0.06 lb/ t on f o r P C d ry bo tt om, 8,776 B t u/ c o a l fr om A ppli ca t io n
L ea d


### · 0.000507 lb/ MM B t u · Sou r ce : A P- 42 – B i t uminou s a nd Subbi t uminou s C o a l C ombu s t ion, T a bl e 1

. 1

- 17, f

o r P C d ry bo tt om G r ee n h o u s e Ga s e s : 

### · M e t h a n e : 0.02425 lb/ MM B t u, GW P o f 25, 0.60625 lb/ MM B t u CO 2 

### e
· N 2 

### 0: 0.003527 lb/ MM B t u, GW P o f 298, 1.051046 l b/ MM B t u CO 2 

### e
· Sou r ce : G r ee nhou s e G a s M a nd a t o ry R e po rt in g Ru l e , T a bl e A

- 1 a nd C

- 2 o f P a rt 98

## P r o j ected A ctua l E m i ss io n s

T a b l e 12 D e m a n d G r o w t h E x c lu s i o n ( s a m e a s F a c t S h e e t )
M a xi m u m h e at i npu t (MMB t u / h r) , bo t h un i t s 14 , 82 2 M a xi m u m h e at i npu t (MMB t u / y r) , bo t h un i t s 129 , 840 , 7 2 0 B a se l i n e h e at i npu t (MMB t u / h r) , bo t h un i t s 97 , 258 , 3 07 F u t u r e e x p e c t e d c a p a ci t y f a c to r ( w i t hou t Pr o j e c t

- r e l at e d i n cr e a s e s ) 89.3 5 % F u t u r e e x p e c t e d h e at i npu t ( w / o Pr o j e c t

- r e l a t e d i n cr e a s e ) , bo t h un i t s 116 , 012 , 6 8 3 Pr o j e c t r e l at e d i n c r e a s e i n f u e l u s e 0.3 % I n cr e a s e i n h e at i npu t c a u se d by Pr o j e c t

- r e l at e d i n c r e a s e i n f u e l , bo t h un i t s 348 , 03 8 H e at I npu t f o r D e t e r m i n i n g P r o j e c t e d a c t u a l e m i s s i on s , M M B t u / y r ( b a se li n e + Pr o j e c t

- r e l at e d , e xcl ud i n g d e m a nd gr o w t h ) 97 , 6 0 6 , 3 4 5

T a b l e 13 A v e r a g e E m i ss i o n R a t es f o r P r oj ec t e d A c t u a l E m i s s i o n s f o r U n it s 4 a n d 5 

### P o llu ta nt U nit 4 U nit 5 B a s is NO X 0.09 8 0.09 8 BAR T FIP li m i t, 3 0

- d ay r o lli n g a v e r a g e
SO 2 0.157 7 0.186 5 A v e r a g e e m i ss i on r at e f r o m b a se li n e a c t u a l em i s s i on s , U n i t s 4 a nd 5 c o m b i n e d PM 0.01 5 0.01 5 BAR T FIP li m i t
PM 10 0.0339 4 0.0340 3 92 % o f B A R T FIP + 0. 0 2 l b / M MB t u + 0.00 4 35 l b /M M B t u SAM li m i t
PM 2 .5 0.0281 8 0.0279 5 53 % o f B A R T FIP + 0. 0 2 l b / M MB t u + 0.00 4 35 l b /M M B t u SAM li m i t C O 0.02 8 0.02 8 A v e r a g e e m i ss i on r at e f r o m b a se li n e a c t u a l em i s s i on s , VO C 0.00 3 0.00 3 A v e r a g e e m i ss i on r at e f r o m b a se li n e a c t u a l em i s s i on s , H 2 SO 4 0.0043 5 0.0043 5 Pr opo se d BA C T l i m i t
L e a d 0.0005 07 0.0005 07 A v e r a g e e m i ss i on r at e f r o m b a se li n e a c t u a l em i s s i on s , U n i t s 4 a nd 5 c o m b i n e d
CO 2 e 206.7 6 206.9 0 A v e r a g e e m i ss i on r at e f r o m b a se li n e a c t u a l em i s s i on s , U n i t s 4 a nd 5 c o m b i n e d