P a ge 1 of 17 S tat e a n d P u b l i c C o mm e n t Su mm a r y a nd R e sp o ns e D o c u m e n t o n E P A ’ s
R e c omm e nd e d A r e a D e s i g n at i o n s f o r t h e 200 8 L e a d D e s i g n at i o n R e c o m m e nd at i o n s
E P A

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N ov e m b er 16, 2010P a ge 2 of 17 T a b l e of Con t e n ts

L i s t of A c rony m s

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1 In t

rodu c ti o n

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

2 Co mm e n t s on P b In i t i al D e s i gn a ti o n s – Round 1

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

2. 1 Co mm e n t on R e g i o n 3 In i ti a l D e s i gn a t i on s – R o und 1

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

2. 2 Co mm e n t on R e g i o n 5 In i ti a l D e s i gn a t i on s – R o und 1

................. . ................. . . 12

2. 3 Co mm e n t on R e g i o n 6 In i ti a l D e s i gn a t i on s – R o und 1

................. . ................. . . 13

2. 4 Co mm e n t on R e g i o n 9 In i ti a l D e s i gn a t i on s – R o und 1

................. . ................. . . 16P a ge 3 of 17 

### L i s t o f A cr o n y m sP a ge 4 of 17

ACR O NY M D E F I NI T I O NS

AQ S A i r Q u a li t y S y s t em

C AA C l e a n A i r A ct

C F R Cod e of F e d e r a l R e gu l a ti o n s

E PA E n v i ron me n t a l P ro t e c ti on A g e n c y

F R F e d e r a l R e g i s te r

F E M F e d e r a l E qu i v a l e n t M e t hod

F R M F e d e r a l R e f e r e n c e M e t hod

GAD M G u i d e li n e on A i r Q u a l it y M o d e l s

MD L M e t hod D et e c t i on L i m it

NA A QS N a ti o n al A m b i e n t A i r Q u al i t y S t and ard s
OAQ P S O ff i c e of A i r Q u a l it y P l ann i n g a nd S t a nd ard s

PA D E P P e nn s y l v an ia D e p a r t m e n t of E nv i ro nm e n t P ro t e ct i on

P b L e a d

QA Q u a l i t y A s s u r e d

Q C Q u a l it y C o n t ro l

S I P S ta t e I m p l em e n t at i on P l a n

U T M U n i v e r s a l T r a n s v e r s e M e r c at o r

T S D T e c h n ic a l S up p or t D o c u me n t

T SP T o ta l S u s p e nd e d P a r t i c u l a t e

T P Y T o n s P e r Y e ar

μ g /m 3 M ic rog r a m s P e r Cub i c M e t e r

T C E Q T e x a s Co mm i ss i on on E nv i ron me n ta l Q u a l it y

U

. S

. U n i t e d S t a t e sP a ge 5 of 17



### 1 I nt r o du c t io n

O n O c t ob e r 15, 20 0 8, U n i t e d S t a t e s E nv i ron m e n t a l P ro t e c ti on A g e n c y ( U

. S

. E PA ) s ub s t an t i a l l y s t r e ng t h e n e d t h e N a t i on a l A m b ie n t A i r Q u a li t y S t and a rd ( N AAQS )

for l e a d ( P b). T h e l e v e l of t h e 200 8 P b s t a nd ard s , s e t a t 0.15 mi c rogr am s p e r c ub i c m e t e r ( g /m 3 )

, i s 10 t i me s ti g h te r t h a n t h e pr e v i ou s s t and ard s . In c on j u n c t i on w i t h

s t r e ng t h e n i n g t h e P b s t a nd ard s , E PA i m prov e d t h e e x i s ti ng P b m on i t or i ng n e t w o r k by

r e qu i r i n g m on i t or s t o b e p la c e d i n a r e a s w it h s o u r c e s , s u c h a s i n du s t

r i a l f a ci l i t ie s , t h at

e m it o n e t o n or m or e p e r y ea r ( tpy) of P b, and a t o t

h e r s it e s

. S t at e s w e r e e xp e c t e d t o d e p l oy t h e s e m on i t or s by J anu a ry 1, 2010. T h e C l e an A i r A c t (C AA ) r e qu i r e s E PA t o

c o m p l e t e t h e pro c e ss of d e s i gn a ti n g a r e a s a s “ non a tt a i n me n t ”

, “ a tt a i n me n t”

, o r

“ u n cl a s s i f i a b l e ” w i t h i n t w o y e ar s of e s t a b l i s h i ng a n e w or r e v i s e d NAAQ S

. E PA m a y

e x te n d t h e d e s i g n a t i on pr o c e s s by u p t o o n e y e a r i f t h e a g e n c y h a s i n s uff

i c i e n t
i nfo r m a t i on t o m a k e t h e s e d e s i gn a ti o n s . B e c a u s e t h e e xp a n d e d P b m on i t or i ng n e t w ork

w il l pro v i d e a dd i t i on a l d at a for c on s i d e r a ti on n e x t

y e ar, E P A h a s d e c i d e d t o t a k e t h e

a d d it i on a l y e ar, a nd c o m

p le t e t h e P b d e s i gn a t i on s i n t

w o round s . In t

h e f i r s t r o und,

w h i c h i s b e i n g f

i n a li z e d t od ay, E P A i s d e s i gn a t i ng a s “ non a tt a i n me n t ” a n y a r e a t h a t i s

v i o l a ti n g t h e 2008 P b s t and ard s b a s e d on d a ta fro m t h e pr e -2010 m on i t or i ng n et w o r k.

F or a l l o t h e r a r e a s , E P A i s e x t e nd i ng t h e d e a d l i n e f o r d e s i gn a t i on s by up t o on e y ea r s o

t h a t d a t a fro m t h e n e w l y d e p l oy e d m o n it o r s c a n b e c on s i d e r e d i n m a k i n g a pprop r ia t e d e s i gn at i on d e ci s i on s

. E PA w il l c o m p l e t e t h e s e c ond r o und of P b d e s i gn a ti o n s b y O c t ob e r 15, 201 1

.

E PA e l e c t e d t o s e e k pub l i c c o m me n t du r i ng t h e d e s i gn a t i on pro c e ss i n o r d e r t o

g a t h e r a dd i t i on a l i nfo r

ma t i on for E P A t o c on s i d e r b e for e m a k i ng f i n a l d e s i g n at i on s

. O n J u l y 8 , 2010, E P A pub l i s h e d a no t i c e i n t

h e F e d e r a l R e g i s te r

(75 F R 392 5 4) i nv i ti n g pub l ic c o m m e n t o n it s r e s p on s e s t o s t a te s and t r i b e s u n ti l A ugu s t 1 6 , 2010.

T h i s do c u m e n t

, t og e t

h e r w i t h t h e pr e a m b l e t o t h e f i n al ru l e and t

h e T e c hn ic a l

S uppor t D o c u me n t s ( T SDs ) for t h e d e s i gn a t i on s , pr e s e n t s t h e r e s pon s e s o f E P A t o t h e

s i gn i f i c a n t c o mme n t s w e r e c e i v e d on our pro p o s e d d e s i gn a t i on s

. T h e r e s pon s e s

pr e s e n te d i n t

h i s do c u m e n t a r e i n t e nd e d t o a ug m e n t t h e r e s po n s e s t o c o m m e n t s t h at

a p p ea r i n t h e pr e am

b l e t o t h e f i n al ru l e and t h e T SD or t o a d dr e ss c o m m e n t s no t
d i s c u s s e d i n t ho s e do c u m e n t s

.P a ge 6 of 17



### 2 Co mm e n t s o n Pb I n i t ial D e s ig n a t io n s – Ro und 1

2.1 Co mm e n t o n R e g i o n 3 I n i t ial D e s ig n a t i o n s – Ro u n d 1

C omm e n t:

T h e u s e o f borough and t o w n s h i p bound ar i e s for dr a w i n g non a tt a i n m e n t a r e a s

w a s arb i t r a r i l y d e f i n e d. In s t e a d, p ar t i a l

- c o u n t y n o n a tt a i n m e n t a r e a s s hou l d b e d e f i n e d

u s i ng am b i e n t a i r m on i t or i n g d at a a nd ai r d i s p e r s i on m o d el i ng. A ny no n at t a i n m e n t a r e a

s hou l d b e d e f

i n e d b a s e d on ma

p c o o rd i n a te s r e f

e r e n ce d t o t

h e U n i v e r s a l T r a n s v e r s e M e r c a t or ( U T M ) s y s te m a nd m un i c i p a l bou n d a r i e s a s do n e by G a v i n L . B i e bu y c k,

P r i n c i p a l Con s u l ta n t for Li b e r t y E nv i ron me n t a l

, In c . In o t h e r a r e a s o f t h e c o u n t ry, E PA

d e f i n e d non a tt a i n me n t ar e a s u s i ng m e t ho d s o t h e r t h a n m un i c i p a l boun d a r i e s

. T h e a i r d i s p e r s i on m od e l i ng d o n e for t h i s c o m m e n t s t il l a c c e p te d a n d u s e d t h e P e nn s y l v an i a D e p ar t m e n t of E nv i ron m e n t al P ro t e c t i on ( PA D E P ) pr i n c i p l e of dr aw i ng a non a tt a i n m e n t

a r ea t o i n c l ud e a l l ar e a s a b o v e 5 0% of t h e 2008 L e a d N a t i on a l A m b i e n t A i r Q u a l it y S ta n d a rd ( N AA Q S ).

T h i s c o mm e n t w a s s ub mi tt e d by : G a v i n L

. B i e buy c k, P r i n c i p a l Con s u l t a n t for L i b e r t y E nv i ron me n t a l

, I n c

. i n l e t t e r s t o t h e PA D E P d a t e d O c t ob e r 2 1, 2009 and O c t ob e r 30, 2 0 09 ;

Coun t y of B e rk s , P e nn s y l v a n i a O ff i ce of t h e Co m m i s s i on e r s i n t h e i r le tt e r t o E PA d a t e d

A ugu s t 12

, 2010 ; and

T r oy A

. G r e i s s , D i r e c t or of E nv i ron m e n t al H e a l t h a nd S a f e t y, E a s t P e n n M a nuf

a c t ur i n g Co., In c

. i n a l e tt e r t o E PA d a t e d A ugu s t 13

, 2010.

E P A ’ s R e s p o ns e:
In t h e 2 0 08 L e a d ( P b ) N A AQS ru l e , e i gh t f a c t or s w e r e g i v e n t h a t c a n b e an a l y z e d

t o s u p por t an ar e a

d e s i gn a t i on d e c i s i on e i t

h e r l arg e r or s ma ll e r t h an t h e pr e s u m p ti v e

c o un t y b ound a r

y. ( S e e 73 F R 6703 3 ) T h e s e e i g h t f ac t or s a r e : (1) emi s s i on s i n a r e a s

po t e n t i a l l y i n cl u d e d v e r s u s e x c l ud e d fro m t h e non a tt a i n me n t ar e a , (2) a i r qu al i t y i n

po t e n t i a l l y i n c l ud e d v e r s u s e x c l ud e d ar e a s , (3 ) popu l at i on d e n s i t y a n d d e g r e e of

urb an i z a t i on, i n c l ud i n g c o mm e r c i a l d e v e l op m e n t i n i n c l ud e d v e r s u s e x c l ud e d ar e a s , ( 4)

e x p e c t e d gro w t h

( i n c l ud i ng e x t e n t , p a t t e rn and r a t e of gro w t h), ( 5) m e t e o r o l ogy ( w e a t h e r / t r a n s po r t p a tt e rn s ), (6) g e ogr a

phy /t opo g r a phy ( m oun t a i n r ang e s or o t h e r a i r b a s i n boun d a r i e s ), (7) j ur i s d i c t i on a l b o und a r i e s ( e .g., c oun t ie s , ai r d i s t r i c t s , r e s e rv a t i on s ,

e t c .) and (8) l e v e l of c on t ro l of em i ss i on s o u r c e s

. A s n o te d i n t h e pr e am b le

, s o m e s t a t e s ,

s u c h a s P e nn s y l v an i a , m a d e a j ud g m e n t t h a t i t w a s i m por t an t t o fo l l o w j ur i s d i c t i on a l

bound ar i e s (p ar ti c u l ar l y w h e r e j ur i s d i ct i on a l bou n d a r i e s s m a l l e r t h an a c o u n t y e x i s t ). In

o t h e r c a s e s , s t a t e s c ho s e t o r e l y p r i mar il y o n a i r d i s p e r s i on m od e l i ng t o d e te r mi n e t h eP a ge 7 of 17

r e c o mm e nd e d bound ar i e s for non a tt a i n me n t ar e a s . In e a c h c a s e , E PA r e v ie w e d t h e s t a t e

r e c o mm e nd a t i on s a nd ma d e m o d i f ic a ti o n s w h e r e n e c e s s ary, i n E PA ’ s j ud g m e n t

, t o

e n s ur e t h at t h e non a tt a i n me n t ar e a s at i s f i e d t h e s t a t u t ory r e qu i r em e n t s

.

C omm e n t:

T h e L yon s A r e a s h ou l d b e d e s i gn a t e d “ U n cl a s s i f ia b l e ” i n s t e a d

of

“ N o n at t a i n m e n t” b a s e d o n t h e r e p r e s e n t a t i v e n e ss of t h e am b i e n t m on i t or i n g d at a

for l ea d

i n t h e a r e a and b a s e d

on r e c e n t d at a t h a t h a v e b e e n c o l l e c te d a nd r e por t e d f o r t h i s a r e a

. S i n c e 200 9

, t h e a m

b ie n t l e a d l e v e l s i n t h i s a r e a h a v e b e e n b e l o w t

h e 2008 l e a d NA A QS.

E a s t P e n n M a nuf a c t ur i n g b e l ie v e s t h a t t

h e 2 0 06 t o 2008 d a t a s hou l d no t b e c on s i d e r e d for

ma k i ng n o n at t a i n m e n t

d e s i g n at i on. T h i s d a ta do e s no t r e pr e s e n t t h e c urr e n t l ea d l e v e l s i n

t h e L y on s a r e a

.

T h i s c o mm e n t w a s s ub mi tt e d by : Coun t y of B e rk s , P e nn s y l v a n i a O ff i ce of t h e Co m m i s s i on e r s i n t h e i r le tt e r t o E PA d a t e d

A ugu s t 12

, 2010 ; and

T r oy A

. G r e i s s , D i r e c t or of E nv i ron m e n t al H e a l t h a nd S a f e t y, E a s t P e n n M a nuf

a c t ur i n g Co., In c

. i n a l e tt e r t o E PA d a t e d A ugu s t 13

, 2010.

E P A ’ s R e s p o ns e: As d i s c u s s e d i n t

h e pr e a m b l e and i n t h e 2008 l e a d NAA Q S ru l e , t h e for m of t h e

s ta n d a rd r e qu i r e s c o m

p a r i s on of m on i t or i ng v a l u e s f r o m 36 3- m on t

h ro l l i ng a v e r a g e s ( i

. e ., t hr e e y e ar s , p l u s t w o pr e c e d i ng m on t h s ). In m a k i ng t h e s e d e s i gn a t i o n s E PA

c o n s i d e r e d d a t a

fro m 20 0 7-2009. S e ct i on 107(d) r e qu i r e s E P A t o d e s i gn a t e a r e a s a s

non a t t ai nm e n t i f s uff

i c i e n t d a t a e x i s t s t o s uppo r t s u c h a d e s i gn a ti o n

. A c c ord i n g l y, w h e r e

s uff i c i e n t d at a i s a v a i l a

b le t o s uppor t a n on a tta i n me n t d e s i gn a ti o n , E PA do e s n o t h a v e d i s c r e t i on t o po s tpo n e d e s i gn a ti o n s o r t o e x c l ud e c e r t a i n y e a r s fr o m c o n s i d e r a t i on i n

c o n s i d e r i ng w h e t

h e r m o n i t or e d d a ta r e s u l t s i n a v i o l a t i o n of t h e P b NAAQS pur s u an t t o 40 C

. F .R

. 50.16.

C omm e n t:

T h e argu m e n t

u s e d by E PA t o j u s t i fy t h e i n c l u s i o n of K u t z t o w n d o e s no t a

pp e a r

t o h a v e te c hn i c al m e r i t

. S m a l l s our c e s i n K u t z t o w n r e por t s m a l l e r qu an t i ti e s of P b

e m i s s i on s t h a n t

ho s e of l e a d s our c e s l o c a t e d i n a d j a c e n t m un ic i p a l iti e s a n d i n a d

j a c e n t

c o un t i e s . C l e an d a t a i s r e c ord e d a t K u t z t o w n U n i v e r s i t

y.

T h i s Co m m e n t w a s s ub mi tt e d by : Coun t y of B e rk s , P e nn s y l v a n i a O ff i ce of t h e Co m m i s s i on e r s i n t h e i r le tt e r t o E PA d a t e d

A ugu s t 1 2 , 2010.

E P A ’ s R e s p o ns e:P a ge 8 of 17 A s s t a t e d i n E P A ’ s t e c h n i c a l s uppor t d o c u me n t f o r t h e L y on s N on a tt a i n me n t ar e a,

“ B a s e d on i t s c o n s i d e r a ti o n of a ll t h e r el e v a n t

, a v a i la b le i nfor m at i on, a s d e s c r i b e d a bov e , E P A b e l i e v e s t h a t t

h e b ound ar i e s d e s c r i b e d h e r e i n e n c o m p a s s t h e e n t i r e ar e a t h at do e s

no t m e e t (or t

h a t c o n t r i b u t e s t o a m

b ie n t a i r qu a li t

y i n a n e a rby ar e a t h a t do e s no t m e e t )

t h e 2008 P b NAAQ S

. ” E PA d e te r mi n e d t h at t

h e s our c e s i n K

u t z t o w n c on t

r i bu t e t o t h e

a m b ie n t a i r qu a l it y i n t h e L yon s N on a tta i n me n t A r e a b e c a u s e of t h ei r p r ox i mi t y t o t h e

m o n it or t h a t

r e c ord e d t h e v i o l a ti o n a nd b e c a u s e t h e non at t ai nme n t ar e a e n c o m p a ss e s

t h em

. T h e d a t a c o ll e c t i on m et h od s u s e d a t t h e K u t z t o w n U n i v e r s i t

y m on i t or s do n o t
fo l l o w t h e qu a l i t y a s s ur an c e ( QA ) gu i d el i n e s a s s t a t e d i n 40 C F R P a r t

58 A pp e nd i x A

a n d c anno t b e u s e d f

or c o m p a r i s o n t o t h e 2008 P b NA A QS

. T h e P b m on i t or a t K u t z t o w n U n i v e r s i t y i s fu l l y op e r a te d

by K u t z t o w n U n i v e r s i t

y und e r t h e d i r e c t i on of an

e nv i ron me n t a l c o n s u l t i n g f i r m h i r e d b y B e rk s Coun t

y. A lt h o ugh t

h e P b m o n it or b e i ng

u s e d at Kutz t o w n U n i v e r s i t y i s a P A D E P F e d e r al R e f e r e n c e M e t

hod ( F R M ) m on i t or, PA

D E P do e s no t c o ll e c t t h e f il t e r a nd d o e s no t QA or qu a l i t y c on t ro l ( Q C) any w h e r e w i t

h i n

t h e c o ll e c t i on and a n a l y s i s pro ce s s

. L a s t l y, PA D E P c on s i d e r s K u t zt o w n U n i v e r s i t

y t o b e

a p a r t n e r s h i p s it e , n o t a c o m p l ia n c e s i t e , b e c a u s e of t

h e l a c k of QA / Q C.

C omm e n t:

T h e pro p o s e d l e a d non a tt a i n me n t ar e a bound ary for t

h e N o r t h R e a d i ng N on a tt a i n me n t A r e a s hou l d b e e xp a n d e d t o i n cl u d e a por t i on o f t h e C i t

y of R e a d i ng, b a s e d on m o d e l i ng don e by G a v i n L . B ie buy c k t h e B e rk s Coun t y Co m m i s s i on e r ’ s

c o n s u lt an t.

T h i s c o mm e n t w a s s ub mi tt e d by : Coun t y of B e rk s , P e nn s y l v a n i a O ff i ce of t h e Co m m i s s i on e r s i n t h e i r le tt e r t o E PA d a t e d

A ugu s t 1 2 , 2010.

E P A ’ s R e s p o ns e: B e r k s C oun t y d i d no t s ub mi t d e ta i l s r e g ard i n g t h e m od e li ng an a l y s i s t h a t w a s t h e b a s i s for i t s p ropo s e d N or t h R e a d i ng P b N on a tt a i n me n t A r e a

. E P A ’ s pr o po s e d P b

non a tt a i n m e n t a r e a s w e r e b a s e d o n do c u m e n te d m od e l i ng s u b m i tte d b y PA D E P a s p ar t
of i t s P b m on it o r i ng n e t w ork d e s i gn p ro c e s s

. T h e f i gur e i n A tt a c h m e n t A o f t h e A u gu s t 12, 20 1 0 c o m m e n t l et t e r s ub m it t e d by t h e B e rk s Coun t y Co m mi ss i on e r s d e p i c t i ng B e r k s Coun t y’ s propo s e d non a tt a i n me n t ar e a no t e s t h a t a c t u a l em i ss i on s ( i n cl u d i ng e s t i ma t e d

fu g iti v e em i ss i on s ) a nd on- s it e me te oro l og i c al d at a w e r e u s e d t o c on s t r u ct t h e m o d el e d

P b c o n t our s t h a t w e r e t

h e b a s i s for B e rk s C oun t

y’ s propo s e d P b non a tt a i n me n t ar e a

. T h i s f i g ur e , h o w e v e r, d i f

f e r s s i gn i f i c a n t l y f r o m pr e v i ou s m od el i ng don e by t h e c on s u lt an t

, G a v i n B i e buy c k, fo r t h e N or t h R e a d i ng P b N on a tta i n m e n t A r e a r e c o m m e n d at i on

s ub mi tt e d on O c t ob e r

19, 2 0 09 t o PA D E P dur i ng i t s pub li c c o m m e n t p e r i od for i t s P b

d e s i gn at i on r e c o mm e n d at i on s

. T h e O c t ob e r 19, 2009 l e tt e r s ub m it t e d t o P A D E P do e s

prov i d e s o m e d e t a il s r e g ard i ng w h a t m od e l

, s our c e s and me te o ro l og i c a l d a t a w e r e u s e d t o

g e n e r a te F i gur e 1’ s m od el c on t our s

. S i n c e t h e c on t our s a r e s ub s t an ti a l l y d i ff e r e n t i n t h e

t w o f i gur e s , E PA c an on l y c o n cl u d e t h at d i ff e r e n t m od e li n g p a r ame te r s w e r e u s e d i n b o t h

i n s t an ce s

. E PA

, t h e r e f

or e , c a n no t a ss e s s t h e v a l i d i t y of t h e m od e li n g u s e d t o d e li n ea t eP a ge 9 of 17

B e rk s Coun t y ’ s p ropo s e d P b no n at t a i n m e n t a r e a s . B e rk s Coun t y’ s propo s e d P b

non a t t ai n m e n t ar e a a pp e a r s t o b e d r a w n t o e x c l ud e a n i ndu s t r i a l a r e a i n t h e nor t h w e s t p ar t
of t h e C it y of R e a d i ng.

C omm e n t:

A l s a c e T o w n s h i p s hou l d

no t b e i n c l u d e d i n t h e N or t h R e a d i n g N on a tta i n m e n t
A r e a b e c a u s e on l y a s ma ll p ar t o f t h e t o w n s h i p h a s a m o d el e d a m b i e n t P b c o n ce n t

r a t i o n i n e x c e ss of h a l f of t h e 20 0 8 P b NA A QS

. T h e N or t h R e a d i ng N on a tt a i n me n t A r e a

s hou l d b e d e f

i n e d a s a f

i v e

- s i d e d p o l ygo n

.

T h i s c o mm e n t w a s s ub mi tt e d by : F r e d e r i c k G an s te r , D i r e ct o r E n v i ron m e n t

, H e a l t h, a nd S a f

et y for E x i d e T e c hno l og i e s i n a l e t t e r t o E P A d a t e d A ugu s t 12, 201 0

.

E P A ’ s R e s p o ns e: E PA a c c e p t s P A D E P ’ s r e c o m me nd ati on of i n c l u d i ng ar e a s m od e l e d i n

e x c e e d an c e of 50% of t h e 2008 P b N AAQS a s a c on s e rv a t i v e a p p ro a c h t o d e s i g n at i ng

non a tt a i n m e n t a r e a s , s i n c e mi nor e m i s s i on s s u c h a s fug i ti v e s w e r e no t m o d e l e d.

C omm e n t:

M on i t or s o p e r a te d

by P A D E P w e r e l o c a te d on pro p e r t y t h a t i s o w n e d and a c c e ssc o n t ro l l e d by E a s t P e nn M anuf a c t u r i ng. T hu s , t h e P b c on c e n t r a t i on s me a s ur e d b y t h e

t w o m on i t or s d o no t r e pr e s e n t c on c e n t r at i on s t o w h i c h t h e g e n e r a l pub l i c w ou l d

b e

e x po s e d.

T h i s c o mm e n t w a s s ub mi tt e d by : E a s t P e nn M a n u f

a c t ur i ng i n a l e tt e r t o PA D E P i n O c t ob e r 2009 ( A t t a c h m e n t A of E a s t

P e nn M anuf

a c t ur i ng l e tt e r d a te d A u gu s t

13, 20 1 0) ; and

T r oy A

. G r e i s s , D i r e c t or of E nv i ron m e n t al H e a l t h a nd S a f e t y, E a s t P e n n M a nuf

a c t ur i n g Co., In c

. i n a l e tt e r t o E PA d a t e d A ugu s t 13

, 2010.

E P A ’ s R e s p o ns e: T h e L yon s E a s t P b m on i t or ( AQS S i t e I D 42-011-071 7 ) w a s e s t a b l i s h e d o n J a n u a ry 1 , 1982 n e a r E a s t P e nn M anuf a c t ur i n g o n t h e f

ar m prop e r t y of H

. S i l f

i e s

. E a s t

P e nn ac qu i r e d

n e arby l and ov e r s ub s e qu e n t y e a r s fo r v a r i ou s pur

p o s e s , e v e n t

u a l l y

a b s o r b i ng t h e S i l f i e s f a r m i n 1999, a s a pprox im a t e d b y P A D E P

. T h e P b m on it o r

op e r a t e d fr o m t

h i s t im e o n prop e r t y o w n e d by E a s t P e nn, un t il it w a s r e c e n t l y r e l o c at e d

on J anu a ry 1, 2010. H o w e v e r, E PA c on s i d e r s t h e m on i t or t o h a v e b e e n l o c at e d i n

a m b i e n t a i r t h r oughou t t h i s p e r i od. T h e d e f i n it i on of a m

b i e n t a i r i s fou n d i n 40 C F R P ar t
50.1 ( e ), w h i c h d e f

i n e s a m b i e n t a i r a s t h a t

po r t i on o f t h e a tm o s

ph e r e

, e x t e r n a l to bu i l d i ng s

, t o wh ic h t h e g

e n e r a l pu b li c ha s a c c e ss

. W

h il e t h e E a s t P e nn f

a c il i t y do e s h a v eP a ge 10 of 17

p ar ti a l f e n c i ng and a s e c ur i t

y c h e c k p o i n t , v a s t po r

ti o n s of t h e pro p e r t y li n e ar e n o t f e n c e d

a n d h a v e no p hy s i c a l b arr i e r. T h e g e n e r a l pub l i c ( i n cl u d i ng t ho s e w ho l i v e i n s i ng l e f a mi l y ho m e s a d

j a c e n t t o t

h e p rop e r t

y l i n e ) h a s no t h i ng t o pr e v e n t t h e m fro m e n t e r i ng t h e

prop e r t y. T h i s c o n cl u s i on i s c o n s i s t e n t w it h E P A ’ s p a s t pr ac ti ce i n i n t e r pr e t i ng t h e t e r m

“ am b i e n t ai r. ” A c o m

p il a t i on of E P A OAQP S a m b i e n t a i r p r e c e d e n t do c u me n ta t i on c a n b e found a t h ttp : /

/ www

. e p a .g o v / s c r a m 001 / gu i d an c e / mc h / a ma 4

. t xt

.

C omm e n t:

T h e r e v i s e d P b s ta nd ard h a s a n e w for m a n d n e w an al y t i c a l pro c e dur e s t h a t w i l l

r e s u l t i n m

u c h l o w e r non-d e te c ti o n le v el s

. E a s t P e nn M anuf a c t ur i n g und e r s t and s t h a t

E P A e n c o ur a g e d t h e u s e of e x i s t i ng P b c on c e n t r a ti on d a t a t o m a k e a r e a d e s i gn a t i on s

w h e r e v e r po ss i b l e , e v e n t houg h t h e e x i s ti n g P b c on c e n t r a t i on d a t a i n cl u d e s non-d e t e c t
d a ta a t a 0 .04 m i c rogr a m s p e r c ub i c me t e r ( μ g /m 3 ) l e v e l r a t h e r t h an t h e r e v i s e d n o nd e te c t l e v e l of 0. 0 075 μ g /m 3

.

T h i s c o mm e n t w a s m a d e b y : T r oy A

. G r e i s s , D i r e c t or of E nv i ron m e n t al H e a l t h a nd S a f e t y, E a s t P e n n M a nuf

a c t ur i n g Co., In c

. i n a l e tt e r t o E PA d a t e d A ugu s t 13

, 2010.

E P A ’ s R e s p o ns e: PA D E P c u r r e n t l y u s e s t

h e F e d e r al E qu i v a le n t M e t hod ( F E M ) for P b a n a l y s i s E Q L -0592-0 8 6 e n t it l e d D e t e rm i na t i o n o f L e a d Con c e n t

r a t i o n i n A m b i e n t P a r t i c u l a t e Ma t t e r b y Ind u ct i v e l y Coup l e d A r

gon P l a sm a – O

p ti c a l E m iss i on S p e c t r o m e t

r y (Co mm on w e a lt h o

f P e nn s y l v an i a )

. T h i s F E M w a s a p p rov e d i n t h e F e d e r a l R e g i s t er o n M a y 15, 1992 (57 F R 2082 3)

. A m e t hod d e te c t i on li m it m et ho d ( M D L ) of no l o w e r t h an 0.04 μ g /m 3 h a s b ee n

d e m on s t r a te d b a s e d on P b d a t a e n t e r e d b y P A D E P i n t o t h e E PA A i r Q u a l it y S y s tem

( AQ S ) dur i ng t

h e f i r s t qu a r t e r of 20 1 0. T h e a pp ar e n t MD L w a s

c o rrobor a t e d b y P A D E P E nv i r o n m e n t a l G roup M an a g e r K i r i t D a l al w h o prov i d e d

s p e c i f i c an a l y s i s c a l c u la t i on s

. Co m p ar e d t o t h e r e v i s e d 0.15 μ g /m 3 2008 P b NA A QS

, t h e

a f or e m e n t i on e d MD L i s r e l a ti v el y h i gh. H o w e v e r, E PA R e g i o n 3 c a n o n l y u s e d a t a a s

r e por t e d by PA D E P

. PA D E P i s i n t h e pro c e ss of e i t h e r r e v am

p i ng it s P b l a bor a t ory

c a p a b il i ti e s or u t il i z i ng a n

ou t s i d e la b or a t ory f

or f u t ur e l e a d s a m p l e an al y s i s

. E i t h e r

e f for t may i m

prov e fu t ur e P b a n a l y s i s MD L s

. H o w e v e r, un t i l t h a t t im e , E PA R e g i on 3

w i l l c o n t i n u e t o u s e t h e d a t a i n AQ S a s s u b m i tt e d by PA D E P f

or P b N A AQS

c o m p a r i s on.

C omm e n t:

E a s t P e n n M a nuf a c t ur i n g h a d a c o ll o c a t e d m o n it or t h a t it r a n fr o m J a nu ary 1,

2009 u n ti l A u g u s t

31, 2009

. T h i s m o n i t or s ho w e d a tta i n m e n t of t h e 200 8 le a d NAA Q S

,

s uppor t i ng an un c l a s s i f

i a b le d e s i gn a t i on p e nd i ng c o l l e ct i on o f a d d it i on a l l e a d m on i t or i ng d a ta

. T h e d a t a c o l l e c te d

by PA D E P w a s s i gn i f

ic an t l y h i gh e r t h an t h e d a ta f ro m t h e

c o ll o c a t e d Ea s t P e nn M anuf a c t ur i ng m on it o r.P a ge 11 of 17

T h i s c o mm e n t w a s s ub mi tt e d by :
E a s t P e nn M a n u f

a c t ur i ng i n a l e tt e r t o PA D E P i n O c t ob e r 2009 ( A t t a c h m e n t A of E a s t

P e nn M anuf

a c t ur i ng l e tt e r d a te d A u gu s t

13, 20 1 0) ; and

T r oy A

. G r e i s s , D i r e c t or of E nv i ron m e n t al H e a l t h a nd S a f e t y, E a s t P e n n M a nuf

a c t ur i n g Co., In c

. i n a l e tt e r t o E PA d a t e d A ugu s t 13

, 2010.

E P A ’ s R e s p o ns e: O n l y d a t a fro m m on it or s t

h at f o l l o w t h e QA gu i d e l i n e s a s s t a t e d i n 40 C F R P ar t
58 A pp e nd i x A c an b e u s e d for c o m p ar i s on t o a n y NA A QS

. A l t

hough E a s t P e nn M a n u f a c t ur i ng h a s s i t

u a t e d P b m on i t or s a d

ja ce n t t o PA D E P ’ s , d a t a fro m t ho s e m on i t or s

c anno t b e u s e d for NA A QS c o m

p a r i s on b e c a u s e t

h e r e i s no e v i d e n c e t

h e y s at i s f y t h e Q A

r e qu i r em e n t s of A pp e nd i x A

. PA D E P m on i t or s un d e rgo r i gorou s QA pro c e du r e s i n c l ud i ng m e a s ur em e n t

un c e r t a i n t i e s ( p r e ci s i on , b i a s , ac c ur a c y, c o m p l e t e n e ss , d e te c t a b i l i t y) t h a t c a nn o t b e v e r i f

i e d for any m on i t or s no t me et i ng t h e r e qu i r em e n t s of 40

C F R P a r t 58 A pp e nd i x A

. F ur t h e r m o r e , a s d i s c u s s e d a bo v e , a s w el l a s i n t h e pr e am b le

a n d i n t h e 2 0 08 P b NA A QS ru l e , t h e f o r m of t h e s t a nd ard r e q

u i r e s c o m p ar i s on o f

m o n it o r i ng v a l u e s fro m

36 3- m on t

h ro l l i ng a v e r a g e s ( i

. e ., t hr e e y ea r s , p l u s t w o pr e c e d i ng

m on t h s ). E P A d o e s no t

h a v e d i s c r e t i on t o po s tp on e d e s i gn a t i on s or t o e x c l ud e c e r t a i n

y e a r s fro m c on s i d e r a ti o n i n c on s i d e r i ng w h e t h e r m on i t or e d d a ta r e s u l t s i n a v i o l a ti o n of

t h e P b NAAQ S p u

r s u a n t t o 40 C. F .R. 50.16.

C omm e n t:

T h e d a t a r e l ie d upon t o d e v e l o p t h e d e s i gn v a l u e for PA D E P L yon s E a s t am b i e n t

P b m on i t or i n g s i te w e r e c o l le c t e d u s i n g s am p l i ng me t hodo l ogy and l a bor a t ory a n a l y t ic a l

t e c h n i qu e s d e v e l op e d a nd im p l e m e n t e d f

o r t h e pr e v i o u s P b NAAQ S

, a nd s hou l d b e

c o n s i d e r e d i n c on t e x t

of t h e e n h a n c e d m on i t or i n g pro c e dur e s t h a t PA D E P i n t e nd s t o i m p l e me n t i n t h e fu t ur e

.

T h i s c o mm e n t w a s s ub mi tt e d by : E a s t P e nn M a n u f

a c t ur i ng i n a l e tt e r t o PA D E P i n O c t ob e r 2009 ( A t t a c h m e n t A of E a s t

P e nn M anuf

a c t ur i ng l e tt e r d a t e d A ugu s t 13

, 2010).

E P A ’ s R e s p o ns e: T h e 2008 P b NAAQ S r e v i s i on d i d n o t n e ce ss it a t e a c h ang e i n P b s a m p l i ng

me t hodo l og i e s

. A n y T o t a l S u s p e n d e d P a r t i c u l a te ( T SP ) s a m p l e r t h a t m e e t s t h e

r e qu i r em e n t s of 40 C F R P ar t 50 A pp e nd i x B, R e f e r e n ce M et h od f o r t h e D e t e r m i na t i o n o

f

Su s p e n d e d P a r t i c u l

a te Ma t te r i n t

h e A tm o s ph e r e ( H i g h

- V o l u m e M e t hod), i s a c c e p t a

b l e for u s e a s a F R M s a m

p le r for P b- T SP

.

S i mi la r l y, a s n o te d i n t

h e pr e a m b le t o t h e 2008 P b NAAQ S

, i t i s no t n e c e ss a ry t o upd a t e or c h a n g e P b an a l y t i ca l t e c h n i qu e s du e t o a c h a n g e i n t h e NAAQ S

. R e por t i ng

a g e n c ie s t hroughou t t h e c o un t ry h a v e c on t i nu e d t o u s e t h e s am e P b an a l y ti c a l te c hn i qu e sP a ge 12 of 17

w i t h t h e i n s t i t u t i on o f t h e n e w P b NA A QS a n d h a v e ob t ai n e d MD L s a t a ppropr i a t e l e v e l s

. M D L s a r e e s ti m at e d i n a c c ord an c e w i t h 4 0 C F R P a r t

136 A pp e nd i x B

. I t i s i n c u m b e n t o n t h e r e p o r ti n g a g e n c y, n o t E P A

, t o e n s ur e t h a t MD L s ar e a

ppropr ia te i n

c o m p a r i s on t o t

h e NAAQS

.

A ll P b d a t a c o l l ec t e d i n t

h e L yon s , PA a r e a t hro u gh D e c e m b e r 3 1, 2009 a t t h e d i s c on t i nu e d m on i t or i ng s i t e s ( L yon s E a s t

, AQS I D 42-01 1 -0717 and L yon s S ou t h

, A Q S

I D 42-0 1 1-005) and b e g i nn i ng J a n u a ry 1

, 2010 a t t h e n e w m on it o r i ng s i t e s ( L yon s P a rk, AQ S I D 42

- 01 1 -0020 and L yon s Bo r o, A Q S I D 4 2 -011-00 2 1) w il l b e u s e d for NAAQS

c o m p li an c e a nd a t t ai n m e n t

d et e r m i n at i on.



### 2.2 C o m m e n t o n R e g i o n 5 I n i t ial D e s i g n a t i o n s – Ro u nd 1

C omm e n t:

T h e I l l i no i s E nv i ron me n t a l P ro t e ct i o n A g e n c y (I l l i no i s E PA ) c o m m e n t e d

r e g a rd i ng E P A ’ s i n t e nd e d m od i f i c a t i on t o t h e d e s i gn a t i on bou n d a r i e s r e c o mme nd e d by

I l l i no i s w h i c h w o u l d d e s i gn a t e an a d d i t i o n al ar e a r e f e r e n c e d a s S e c ti o n

24 of M a d i s on Coun t y a s no n at t a i n m e n t

. T h e y ur g e d E P A t o r e c on s i d e r t h e d e c i s i on t o i n c l ud e t h i s

a d d it i on a l a r e a , s t at i ng t h at no a dd i t i on a l l e a d em i ss i on s ou r c e s ar e i n t h e a dd e d a r e a a n d

t h a t i n cl u d i n g t

h i s a d d it i on a l ar e a w ou l d e s ta b li s h a r el a t i v e l y e s o t e r i c b o und a ry

.

T h e s t a te al t e rn a t i v el y s ugg e s t e d, i n t h e e v e n t E P A d i s a gr e e d w i t h i t s

r e c o mm e n d at i on, t

h at E P A i n c l ud e bo t h G r a n i t e C it y T o w n s h i p a n d V e n i c e T o w n s h i p i n
M a d i s on Coun t

y, i n t h e i r e n ti r e t

y, i n t h e l e a d no n at t a i n m e n t a r e a . I l li no i s E PA s ta t e d t h a t

c o i n c i d e n t j u

r i s d i c t i on a l bound ar i e s , s u c h a s t o wn s h i p s , w ou l d b e h e l p f u l i n ar t i c u l a t i ng

t h e bound ary of t

h e no n at t ai nm e n t a r e a

. G r an it e C i t y T o w n s h i p and V e n i c e T o w n s h i p a s

t h e non a tt a i n me n t a r ea w ou l d s ti l l e n c o m p a s s t h e c on t r i bu ti n g e m i s s i on s s o ur c e s , a s w e l l

a s S e ct i on 24 o f M a d i s o n Coun t y.

E P A ’ s R e s p o ns e : E PA h a s c on c l ud e d t

h a t i t i s n e c e ss a ry a nd a

ppr o pr i a te t o i n c l ud e t h e a r ea t o t h e

s ou t h o f t h e U S S t e e l f

a ci l it y i n t h e f

i n a l non a tt a i n me n t ar e a

b a s e d on m et e oro l og i ca l d a ta

a n d t h e und e r pr e d i c ti ng te n d e n c i e s o f t h e m od e li ng t h a t w a s prov i d e d i n t h e S t a te ’ s

r e c o mm e nd a t i on. T h i s e xp an s i on w ou l d c a p t ur e al l li k e l y im

p a c t s fro m t

h e em i ss i on s fro m t h e f a c ili t y on t h e s urround i ng a r ea

.P a ge 13 of 17 H a v i ng d e te r m i n e d t h a t t h e bound ary n e e d s t o b e e x te n d e d b e yond t h e c it y li m it s of G r an i t e C i t y i n ord e r t o i n c l ud e a l l ar e a s t h a t d o no t m e e t t h e 200 8 P b N A AQS

, E P A

a gr e e s t h a t I l li n o i s ’ a lt e rn a ti v e r e c o m m e nd a t i on a ppropr i a t e l y e n c o m p a s s e s t h e e n ti r e

a r ea o f non a tt a i n me n t

. A dd i ti on a l l y, I l li n o i s E P A ’ s r ec o mm e nd a ti on c o n s i s t s of w e l ld e li n e a t e d j ur i s d i c t i on a l b o und a r i e s , w h i c h f ac i lit a t e s a i r qu al i t y p lann i ng for t h e a r e a. L i k e w i s e , t h e r e v i s e d r e c o m m e nd a ti on c l ar i f i e s a nd s i m

p li f ie s t h e bound ar i e s o f t h e f i n a l

non a t t ai n m e n t ar e a

for i n te r e s t e d p a r t i e s

. F or t h e s e r e a s o n s , E PA i s a dop t i ng I l li n o i s ’

a l t e rn a t i v e r e c o m m e nd a t i on a s t h e b a s i s f or t h e non a tt a i n m e n t bound ar ie s fo r t h i s ar e a

.



### 2.3 C o m m e n t o n R e g i o n 6 I n i t ial D e s i g n a t i o n s – Ro u nd 1

E PA R e g i on 6 r e c ei v e d c o m me n t l e tte r s fro m four s our c e s : t

h e G ov e rnor of

T e x a s , t h e T e x a s Co m m i s s i on on E nv i r on m e n t a l Q u a l it y ( T C E Q ), t h e C i t

y o f F r i s c o and

E x i de

C omm e n t:
G ov e rnor R i c k P e r

ry of T e x a s prov i d e d c o m m e n t s on O c t ob e r 13, 2010 r e v i s i ng h i s O c t ob e r

14, 2009 r e c o mme nd a t i on for le a d n o n a tt a i n me n t b o und a ry

. In h i s l e t t e r, t h e G ov e rn o r s t at e d t h a t

h e i s r e v i s i ng h i s r ec o mme nd at i on b a s e d on t h e f a ci l it y ’ s p e r m i t

a l t e r a t i on and t

h e n e w m o d el i ng p e rfor m e d by t h e T C E Q i n c orpor a ti n g t h e f a c il i t y’ s

r e d u ce d p e r m i tte d ma x i m

u m a l l o w a b l e e m i s s i o n

r a te s

.

E P A ’ s R e s p o ns e :
E PA a ppr e c i a t e s c o mm e n t s fro m t h e G ov e rn or of T e x a s

. A f te r r e v i e w i n g t h e f a ci l it y’ s p e r m it a lt e r a ti o n a nd t h e r e du ce d m a x i m

u m a ll o w a b l e em i ss i on r at e s , and a f te r

r e v ie w i ng T C E Q m od e l i ng a ppro a c h and r e s u l t s , w e a gr e e w i t h t h e G ov e rnor’ s r e v i s e d

r e c o m m e nd a ti o n for bound ar i e s for t h e non a t t ai n m e n t a r e a

.

C omm e n t:

T C E Q pr o v i d e d c o m m e n t s r e g ard i n g on e of t h e P b m on i t or s i n F r i s c o. T C E Q s a i d

t h a t a t t h e t im e t

h e m on i t or i ng d at a f

or m o n it or 480850009 w a s e x t r a c t e d fr o m AQ S t h e

m on i t or w a s l o c a t e d on E x i d e c o m p a n y prop e r t y b e h i nd a s e c ur i t y f e n c e a nd i n a c c e s s i b le

t o t h e pub li c

. T h e d a t a fro m t h i s m on it o r w a s i n c orr ec tl y l i s t e d a s am b i e n t a i r d a ta

. B e ca u s e t h e d at a

fro m t h i s m o n it or ar e non- a m b i e n t

, T C E Q r e c o m m e nd e d t h a t r e f e r e n c e

t o t h i s m on i t or b e r e m ov e d fro m E P A ’ s T e c hn ic a l S uppor t D o c u m e n t ( T SD ), a nd u s e

on l y d a t a fro m t h e o t h e r t w o m on i t or s w h ic h r e pr e s e n t a m b i e n t a i r a n d pro v i d e a d e qu a te
d a ta t o s upp o r t E P A ’ s propo s e d non a tta i n me n t a r ea

.

E P A ’ s R e s p o ns e :
E P A n o t e s t

h a t t h e m on i t or i n qu e s t i on i s l e s s t h a n 5 f e e t fr o m t h e c h a i n li nk f

e n c e

mark i ng t h e prop e r t y li n e a t t h e m on it or l o c a t i on. As s u c h, i t s m e a s ur e m e n t s ar e

c o n s i d e r e d r e pr e s e n t at i v e of a m b ie n t a i r a c ro s s t h e f

e n c el i n e

.P a ge 14 of 17 As no t e d by T C E Q

, t

h e r e a r e t w o o t h e r m on i t or s i n t h e a r e a t h a t h a v e r e c o rd e d

me a s ur e m e n t s a bov e t h e N AAQ S for l e a d, s o t h i s d a t a i s n o t n e c e s s ary for t h e

non a t t ai n m e n t d e s i gn a ti on

. F u r t h e r m or e , e v e n i f t

h e d a t a fro m 48085 0 009 w e r e no t

u s e d

for t h e p u rpo s e of d e t e r m i n i ng a tt a i n me n t o r non a t t ai n m e n t

, t h e d a t a fro m t h e m on i t o r

me e t s a l l of E P A ’ s QA r e qu i r e me n t s and E P A b el i e v e s it w o u l d s t i ll b e a p p ropr i a te t o u s e

t h e d a ta i n e v al u at i ng t h e prop o s e d bound ary of t h e no n at t a i n m e n t a r e a and a l s o i n t h e fu t ur e a t t a i n m e n t

p l an. T h e r e f

o r e , w e do n o t b e li e v e t h e r e f e r e n c e t o t h e d a t a

fro m

m o n it o r 48085000 9 s h o u l d b e r e m ov e d f ro m t h e T S D

.

E P A no t e s t h i s m on i t or h a s b e e n l i s t e d a s a S L AM S m on i t or a n d t h e d a t a h a s b ee n

r e por t e d by t h e S t a te a s a m b i e n t d a t a for t h e l a s t t

hr e e y e ar s

. E P A und e r s ta n d s t h a t T e x as

no w b e l ie v e s t h e d a ta f

ro m t h i s m on it or s ho u l d b e d e s i gn a t e d a s non

- r e gu l a t ory d a t a. T h i s i ss u e w il l b e a ddr e ss e d t hrou g h fu t ur e d i s c u s s i on s w it h t h e S t a t e

.

C omm e n t:

Bo t h E x i d e and t

h e C i t y o f F r i s c o p rov i d e d c o m me n t s t h at r ai s e d c o n c e rn s w it h

t h e s i z e of E P A ’ s p r opo s e d no n at t a i n m e n t a r e a

. T h e bound ary of t h e p r opo s e d

non a tt a i n m e n t a r ea w a s b a s e d on d i s p e r s i on m od e li n g p e r f or m e d by T C E Q . In i t s l e t t e r, E x i d e s a i d t h a t T C E Q p e rfor me d t h e m o d el i ng u s i ng t h e ma x i m u m ho u r l y e m i s s i on r a t e

po ss i b l e for a

3- m o n t h p e r i od and dr e w t h e bound ary of t h e no n at t a i n m e n t ar e a a s a

r e ct ang l e around t

h e 0. 1 5 μ g /m 3 i s op l e t h. E x i d e a ss e r t s t h a t u s i n g t h e ho u

r l y p o t e n ti a l

e m i s s i on r e p r e s e n t s a w or s t c a s e s c e n ar i o and i s ov e r l y c on s e rv a t i v e , w h i l e u s i n g a n n u a l

po t e n t i a l e mi s s i o n s t o p e r for m t h e m od el i ng w ou l d h a v e prov i d e d a m or e a ppropr i a t e bound ary for t

h e n on at t a i n m e n t a r e a f

o r a 3- m on t h a v e r a g e s t a nd ard. In a dd i ti o n, E x i d e

s t a te d t h a t t h e r e w e r e no m on i t or i ng d at a a v ai l a b l e t o s uppor t t h e i n c l u s i o n of ar ea s a t t h e 0.15 μ g /m 3 i s o p le t

h pr e d i c t e d by T C E Q m od e l i ng b a s e d o n t h e m a x i m u m a l l o w a

b l e hour l y e m i s s i on r a te

. E x i d e i n d ic a t e d t h a t T C E Q ’ s m od e li ng i s a ppr o x im a t e l y 3 t i me s h i g h e r a t t h e m o n it or l o c a t i on s t h an t h e m on i t or e d v a l u e s and m od e li ng o f a c t u a l

a n nu a l i z e d em i ss i on r a t e s y i e l d s a v a l u e cl o s e r t o t

h e m on it o r e d v a l u e a t

on e of t h e

m o n it or s

. E x i d e prov i d e d m od e l i ng r e s u l t s p e rfor me d u s i ng annu a l e m i ss i on r a t e s w h i c h

i n d ic a t e s t

h e a r e a a bov e t h e 0.15 s t and a rd i s s ma ll e r t h an t h e pr o po s e d non a t t ai nm e n t

a r e a.

E x i d e al s o c o m m e n t e d t h a t t h e y a g r ee d w i t

h t h e f a c t or s u s e d b y E PA a n d T C E Q

t o d e f i n e t h e n o n- a tta i n me n t ar e a s t h a t d e v i at e fro m t h e pr e s u m p ti v e c oun t y bound ary.

E P A ’ s R e s p o ns e : E PA a ppr e c i a t e s c o mm e n t s fro m t h e C i t y of F r i s c o a nd E x i d e

. E P A ’ s p r opo s e d

bound ary of t

h e non a tt a i n me n t ar e a w a s b a s e d on t h e r e c o mme nd a t i on fro m t h e S t a t e of

T e x a s

. A f

t e r p r o m u l g a t i on of a

n e w S ta n d a rd

, s e c t i on 107 (d) ( 1)( A ) of t h e C A A

prov i d e s t h e o p por t un i t y f

or t h e G ov e r

nor o f e a c h S t a te i s t o p r ov i d e r e c o m m e nd a t i on s for a l l a r e a s i n t h e S t at e a s t o w h e t h e r t h e ar e a s s h ou l d b e d e s i gn a te d a tt a i n me n t

,

non a t t ai n m e n t or un c l a s s i f i a b le

. E PA m

u s t c o n s i d e r t h e s e r e c o m m e nd a t i on s and pro v i d e

t h e gov e rnor a t l e a s t 120 d a y s no t i c e i f w e i n te n d t o d i s a gr e e w i t h t h e S ta t e ’ sP a ge 15 of 17

r e c o mm e n d at i on. E P A p r opo s e d t o a g r ee w i t h t h e i n it i al r ec o m me nd a t i on f ro m T e x a s

a n d a s d i s c u s s e d a b ov e , t

h e G ov e rnor p rov i d e d r e v i s e d r e c o m m e nd a t i on s i n a l e tte r d a t e d

O c t ob e r 13, 20 1 0.

B e c a u s e of m on i t or e d le v el s t

h a t w e r e h i gh e r t

h a n t h e n e w s t and a r d, T e x a s

c o n cl ud e d a

por ti o n of Co l l i n Co u

n t y i n t h e v ic i n i t y of t h e E x i d e f

a c i li t y s hou l d b e d e s i gn a t e d non a t t ai n m e n t

. T o e s t a b l i s h t h e bou n d a ry o f t h i s n on a tt a i n me n t ar e a , T e x a s

p e rfor me d ai r qu a li t

y m od e l i ng. A i r q

u al i t y m od e l i ng i s an a ppr o pr ia t e a ppro a c h for

e s t a b l i s h i ng a bound ary, a s it ca n

b e u s e d t o e s t im a t e c on c e n t r a ti o n s i n a r e a s w it ho ut a i r

qu a li t y m on it or s

.

In a c c e p ti n g T e x a s ’ r e c o m m e nd a t i on for t h e prop o s e d bound ary, E P A h a s

r e v i e w e d T C E Q ’ s m od e li ng and a g r e e d t h at t h e T C E Q a ppro a c h of u s i ng t h e ma x im u m

a l l o w a b le l e a d e mi s s i on s i n p e r for m i ng t h e m od e l i ng w a s a r e a s on a b l e a

ppro a c h. T h i s

a p pro a c h i s g e n e r a ll y c on s i s t e n t w i t h 4 0 C F R A pp e n d i x W
– G u i d el i n e o n A i r Q u a l it y M od e l s ( G A Q M )

. W

h i l e t h e f a ci l it y h a s no t h a d em i ss i on s a s h i g h a s i t s p e r mi t

a l l o w a b le s o n a n a nnu a l b a s i s i n r e c e n t y e ar s , i t c ou l d op e r at e a t fu l l c a p a c i t y i n t h e fu t ur e

. In f a ct

, r e v i e w of T C E Q ’ s e mi s s i on i nv e n t ory d a t a for 2 000-2008 i nd i c a te s t h a t

E x i d e ’ s emi s s i o n s h a v e v a r i e d g r e a tl y, w i t h t h e a nnu a l m a x i m u m r e por t e d e m i s s i o n s b e i ng 3-4 t i me s la rg e r t h an t h e m i n im u m a nnu a l e mi s s i on s r e por t e d. W it h t h i s l e v e l of

v a r ia t i on i t s e em s t h e a l l o w a b l e e m i s s i on r a t e ar e n e c e s s ary t o e n s u r e t h a t a l l po t e n t i a l

e m i s s i on s s c e n ar i o s ar e c ov e r e d. E P A al s o a gr e e s t h a t T C E Q ’ s u s e of a m a x im u m

a l l o w a b le h o ur l y em i ss i on r a t e , r at h e r t h a n a n a n nu a l r a t e , i s r e a s o n a b l e , g i v e n t h a t

c o m p l i a n c e w i t

h t h e s ta n d a rd i s b a s e d o n m on i t or i ng d a t a c o ll e c t e d on a o n ce e v e ry 6 (1 / 6 ) d a y s c h e du l e , and t

h e s e P b m o n i t or i ng d a t a a r e t h e n a v e r a g e d t o o b t a i n m o n t h l y

me a n s

. T h e m o n t h l y m ea n s fro m e ac h 3 m o n t h p e r i od ar e a v e r a g e d t o ob t ai n ro l l i ng 3

m o n t h a v e r a g e d a t a fo r c o m p ar i s on w i t

h t h e NAA Q S

. U s i n g a n a nnu a l r a t e c o u l d

po t e n t i al l y mi s s pro c e ss v a r i a t i on s t h at w o u l d b e c a p t u r e d i n t h e m o n t h l y

or t h r e e m on t

h

a v e r a g e s

. A s d i s c u ss e d b e l o w , T C E Q h a s l o w e r e d t h e em i s s i on s a ll o w a b l e und e r t h e

s our c e ’ s p e r m it s i n c e E PA propo s e d non a tt a i n m e n t

bound ar i e s , s o t

h e em i ss i on s no w b e i ng m o d el e d ar e l o w e r.

Wi t h r e g a rd t o E x i d e ’ s c on c e rn s t h at t h e m od e l pr e d ic t s h i gh e r v a l u e s t h an t h e

m o n it o r s , E PA no t e s t h at w h il e t h e m o d el d i d ov e r pr e d i ct at s o me m on i t or s , t h e m od el

s ho w e d good c orr e l a t i on w i t h t h e ma x i m

u m m on i t or e d v a l u e

. T h e ma x i m u m m o d el e d

v a l u e w a s 1.42 μ g /m 3 a t a r e c e p t or l o c a te d n ea r t h e ma x i m u m m on i t or e d v a l u e of 1.26

μ g /m 3

. E P A no t e s t h a t t h e r e a r e d i ff i c u l t i e s i n c o m p ar i ng m o d el i ng d a ta w it h m on i t or i ng d a ta

. F i r s t

, t

h e m od e l i ng i s b a s e d on 5 y e a r s of m et e oro l o g ic a l d a t a fro m a t im e p e r i o d

e ar l i e r t h a n t h e r e c e n t m on i t or i ng d at a r e f e rr e d t o by t

h e c o m p a ny. Us i ng m

u lt i p l e y e a r s of w e a t h e r d at a i n t h e m od e l i s i n t e n d e d t o mi ti g a te y ear t o y e ar v ar i a ti o n s bu t w i nd

p a tte rn s t h a t i m

p a c t m od e l e d a m

b i e n t c o n ce n

t r a t i on s ca n s t il l v a ry s o m e w h a t . In

a d d it i on, t h e l arg e v a r i at i on i n emi s s i o n s dur i ng t h e p e r i od fur t h e r c o m p li c at e s t h e

c o m p a r i s o n of m od e l a nd m on it o r e d r e s u l t s . In t h i s c a s e , t h e m a x im u m m od e le d v a l u e i s

on l y 12.7% h i gh e r t h an t h e ma x i m u m m on i t or e d v a l u e fro m a d i ff e r e n t p e r i od. F ur t

h e r,

t h e m od e le d m a x i m

u m a nd m on i t or e d m a x i m u m a r e s p a t i a ll y i d e n t ic a l

. T h e m od e li ng i s

w e l l w i t h i n E PA ’ s e xp e ct a t i on for t h e a c c ur a c y of m o d el s

.P a ge 16 of 17 E x i d e ’ s r e pr e s e n t a ti v e s me t w i t h t h e R e g i on 6 s t a ff on S e p t e m b e r 23, 2 010 t o d i s c u s s t h e p ropo s e d n o n at t a i n m e n t bound ary. E x i d e ’ s p l a n t m a n a g e r s t a t e d t h at t h e f a ci l it y w a s w i l l i ng t o a l te r t h e i r Ti t l e V p e r m it and a c c e p t l o w e r a l l o w a b l e em i ss i on s l im it

. O n O c t ob e r 6, 2010 T C E Q i ss u e d E x i d e a r e v i s e d p e r m i t t h a t l o w e r e d t h e f

ac i li t y’ s

ma x i m u m a l l o w a b le h our l y em i ss i on r at e

. T h e t o t a l hour l y e m i s s i on r a te s h a v e b e e n

r e du c e d s i gn i f

ic an t l y. T C E Q r a n t h e ai r qu a li t y m od e l w i t h t h e r e v i s e d e m i s s i on r a t e s

. M od e li ng w i t

h t h e r e v i s e d r at e s r e s u l te d i n a s m al l e r non a tt a i n m e n t ar e a t h an pr e v i ou s l y

r e c o mm e nd e d by t

h e G ov e rnor. As a r e s u l t t h e G ov e rnor of T e x a s r e v i s e d h i s

r e c o mm e n d at i on for t

h e n on a tta i n m e n t ar e a

boun d a r i e s i n a l e tt e r s e n t t o E PA on O c t o b e r 13, 2 0 10. W e h a v e r e v i e w e d t h e a ppro a c h t h a t T e x a s h a s t a k e n i n d e v e l op i ng t h e r e v i s e d

r e c o mm e n d e d bou n d a ry f o r t h e non a tt a i n me n t ar e a , a n d t h e n e w m o d el i ng r e s u lt s and a s d i s c u s s e d a b o v e , w e a gr e e w i t h t h e r e v i s e d G o v e rno r ’ s r ec o m me nd a ti o n

.

C omm e n t:

T h e C i t y o f F r i s c o p r ov i d e d c o m m e n t s oppo s i ng t h e propo s e d non a tt a i n m e n t a r e a b e ca u s e it p la c e s pr i v a t e and pub l ic p rop e r t y w i t h i n t h e prop o s e d non a tt a i n m e n t ar e a ,

w h i c h c o u l d h a v e a

n e g at i v e im

p a c t o n t h e u s e of t

h a t prop e r t y

. T h e C i t y a l s o d i s a gr e e s

w it h t h e u s e o f

po t e n ti a l t o e m it r a te s i n t h e m od e li ng a nd s ay s t h a t t h e non a tt a i n m e n t
bound ary s hou l d h a v e b e e n d e t e r m i n e d b a s e d on a c t u a l e m i s s i on d a ta r at h e r t h a n

t h e or e t ic a l c o m

pu t e r m od e l i ng.

E P A ’ s R e s p o ns e : E PA a ppr e ci a t e s t h e C i t

y of F r i s c o c o m m e n t s

. A s d e s c r i b e d, t h e b ound ary i s b a s e d on m od e li ng p e r f

or me d by T C E Q a n d s ub m it t e d b y t h e G o v e rnor o f T e x a s

. T h e

m od e l i ng i s b a s e d

on t h e n e w m a x im u

m a l l o w a b l e e m i s s i on r a t e s , w h i c h r e s u lt s i n a

s m a l le r n o n at t ai n m e n t ar e a t h a n or i g i n a l l y propo s e d. E PA i s r e v i s i ng t h e non a t t a i n m e n t

a r ea bound ary b a s e d on t

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r e v i e w e d t

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po l l u t an t s

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h a t do e s n o t me e t (or t h a t c on t r i bu t e s t o a m

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y i n a n e a rby a r e a s t h a t d o e s no t m e e t ) t h e 2 0 08

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### 2.4 C o m m e n t o n R e g i o n 9 I n i t ial D e s ig n a t i o n s – Ro un d 1

C omm e n t s: E PA r e c e i v e d c o m m e n t s fro m As ar c o, L L C, and s i x A r i z on a S t a te / l o c al

gov e rn me n t off

i c e s i n r e s po n s e t o o u

r J u l y 8, 2 010 pr o po s al t o d e s i gn a t e t h e H a y d e n, A r i z on a a r e a a s n o n a tta i n me n t

. T h e c o m me n t e r s c h al l e n g e d o ur p r opo s a l and a s s e r t e d

t h a t t h e m on it o r i ng d a ta w e r e l i e d u pon w a s n o t c o ll e c t e d i n a c c o r d a n c e w i t h a p p l i c a b l e

qu a l i t y a s s ur an c e a n d qu a li t y c o n t ro l ( “ QA / Q C ” ) r e qu i r em e n t s

. A ll of t h e S t a t e /l o ca lP a ge 17 of 17

gov e rn me n t of

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r e pr e s e n t a r i s k t o t h e pub l i c h e a lt h, a n d t h a t a n u n w a rr an t e d non a t t a i n m e n t d e s i gn a t i on

c o u l d h a v e s i g n i f

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p a c t s on t h e l o c a l ec o no m i e s

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h e H ayd e n S me l t e r Co m p le x , a nd a s k e d t h a t E P A

, i f i t

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n e y and D ud l e yv i l l e fro m t h e non a tt a i n me n t ar ea

.

E P A ’ s R e s p o ns e :
B a s e d on ou r e v a l u a ti on of t h e m on i t o r i ng d a t a i ss u e s r a i s e d i n t h e s e c o m m e n t s ,

w e h a v e d et e r mi n e d t

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non a tt a i n m e n t d e s i gn a t i on f o r t h e H ayd e n a r e a a t t h i s t i me

. T h e J u l y – S e p t em b e r 2008

d a ta t h a t w e ob t a i n e d fro m t h e H a yd e n M ai n t e n an c e Bu i l d i n g m on i t or d i d no t fu l l y

s a t i s fy a p p li c a b l e QA / Q C r e qu i r e me n t s i n c l ud i ng t h e c o l l o c a t e d s a m p l i ng r e qu i r em e n t

c o n t a i n e d i n 4 0 C F R p a r

t 58, A pp e nd i x A

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propo s a l r e l i e d

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for c o m p ar i s on s w i t

h t h e P b N A AQS . B e c a u s e w e do no t c urr e n tl y h a v e s uff i c i e n t
i nf o r m a t i on t o pro m

u l g at e a non a t t ai n m e n t d e s i gn a t i on fo r t h e H ayd e n a r e a , w e a r e d e la y i ng ou r

d e s i g n at i on of t h e a r e a f

or t h e P b NAAQ S un ti l O c t ob e r 1 5, 2011.

N e w s t a t e -op e r a t e d P b- T S P m o n it o r s h a v e s i n c e b e e n i n s t a l l e d i n t h e H a y d e n

a r ea

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2011. If E PA i n t e nd s t o m a k e a non a tt a i n me n t d e s i gn a t i on for

t h e a r ea , E PA w il l a l s o r e e v a l u a te t h e a pp r opr i a te n on a tta i nm e n t a r e a bound ar ie s a t t h at

t im e

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or e p r o m u l g at i ng t h e s e d e s i g n a t i on s f or t h e P b NAAQ S

, E P A w i ll

no t i fy t h e S t at e and t h e pub l i c a nd prov i d e an op p or t un i t y t o c o m m e n t.

As t o t h e c o m m e n t e r s ’ a s s e r t i on s a bo ut pub l ic h e a lt h a nd e c on o m ic i m p a c t s , t h e s e

a r e no t f a ct o r s t h a t E PA c on s i d e r s a s p ar t of t h e d e s i g n a t i on p r o c e s s u

nd e r C A A s e c t i on 107( d )(1). F o l l o w i n g pro m u l g a ti o n of a N A AQ S und e r s e c t i on 1 0 9 of t h e A c t

, E PA i s ob l i g a te d und e r s e c t i on 1 0 7(d)(1) t o d e s i gn a t e a s non a tt a i nme n t “ a ny ar e a t h a t do e s no t

me et (or t h a t c on t r i bu t e s t o a m b ie n t ai r qu a l it y i n a n e a rby ar e a t h at d o e s n o t m ee t ) ” t h e NAA Q S fo r t h a t po l l u t an t

. T hu s , t h e a pprop r i a t e i n q

u i ry for a d e s i gn a ti o n und e r s e c ti o n 107( d )(1) i s w h et h e r t

h e ar e a v i o l at e s t h e NAAQ S o r c o n t r i bu t e s t o v i o la t i on s of t h e NAA Q S i n a n e arby ar e a

. E PA do e s no t a t t h i s po i n t r e v i s i t t

h e e x t e n s i v e e v a l u a t i on o f pub l ic h e a lt h

r i s k s t h at it c on d

u ct e d i n e s t a b l i s h i n g t h e NA A QS un d e r C AA s e ct i on s 108

a n d 109 ( s e e

, e

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., pr e a m

b l e t o P b N A AQS f

i n a l ru l e a t 73 F R 6696 4

, N o v e m b e r 12,

2008 )

, a s s e c t i on 107( d )(1) pro v i d e s n o s u c h a ut hor i t y. L i k e w i s e , s e c ti o n 107(d ) (1) do e s

no t a u t hor i z e E PA t o c on s i d e r e c ono m ic i m p a ct s du r i ng t

h e d e s i gn a ti on pro c e s s , a s

e c ono mi c i m p a c t s ar e n o t r e le v a n t t o t h e qu e s t i o n w h et h e r t

h e ar e a v i o la t e s t h e NAAQ S

or c on t r i bu t e s t o v i o l a t i on s i n a n e arby ar e a . I n

bo t h non a tt a i n me n t and a tt a i n m e n t (or

un c l a s s i f ia b le ) a r e a s , ho w e v e r , t h e C AA g e n e r a ll y a l l o w s E PA a nd S t a t e s t o c on s i d e r

e c ono mi c i m p a ct s i n d e t e r mi n i ng w h a t po l l u t i on c on t ro l s s hou l d b e im p l eme n t e d.