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Da t e : 1 / 31 / 2011 5 : 32 PM

S u b j ec t: S e c onda ry Lead S m e l t e rs

- F ugi t i v e lead e m i ss ion s and I CR r e s pon s es

Dea r Mr

. Cu mm ing s,

T h an k y ou f o r t he in f o rm a t ion and da t a t ha t y ou s u b m i t t ed t o u s in

r e s pon s e t o t he in f o rm a t ion c olle c t ion r eque s t l e t t e rs t ha t we s e n t y ou

in J une and J ul y o f 2010

. T he da t a and in f o r m a t io n a r e v e ry help f ul f or

ou r Ri sk a nd T e c hnolo g y Re v iew o f t he S e c onda ry Lead S m e l t i n g s ou rce

c a t ego ry

. W e ha v e been u s ing m u c h o f t he da t a a n d i n f o rm a t ion in our

ana l y s e s a s y o u r ep o r t ed.

Howe v e r

, wi t h r ega r d t o t h e e s t i m a t e s o f f u gi t i v e e m i ss ion s,

be c au s e o f c o m pl e x i t ie s o f e s t i m a t ing t h e s e e m i ss ion s

, t h e da t a gap s and

in c o m ple t e in f o rm a t ion

, a n d v a r i o u s un c e r t ain t ie s

, we d e t e rm in e d t ha t it

wa s app r op r ia t e t o g a t h e r ad d i t i onal in f o rm a t i on a nd c o n du ct

s uppl e m e n t a l an a l y s e s t o c a l c u la t e r e v i s ed e s t i m a t e s o f f u g i t i ve

e m i ss ion s f o r s o m e o f

t he f a c i l i t i e s.

As y ou k now

, i n t he s e c t i on 1 14 s u rv e y

, we r e q ue s t e d i n f o rm a t ion

f o r s t a ck a nd f ug i t i v e e m i ss ion s f r o m y ou r f a c i l i t i e s

. W e a r e now in

t he p r o c e s s o f c o ndu c t i ng d i s pe rs ion m odeling o f t h e e m i ss ion e s t i m a t e s.

I n s o m e in s t an c e s

, we ha v e f ound a d i s c r e pan cy be t wee n t he p r eli m in a ry

r e s ul t s o f t he d i s pe rs ion m o del and t h e v al u e s r e c o r de d a t lo c al a m bient

m oni t o rs w h i c h c an n o t be a cc oun t ed f o r b y t h e s t a ck a n d f ugi t i ve

e m i ss ion s r epo r t ed

. E P A a s s u m e s t he s t a ck e m i s s i o n s a r e gen e r ally

r eli a ble a s t he y a r e ba s ed on a c t ua l t e s t da t a

, and t he p r i m a ry c au s e of

t he di scr epan cy i s due t o r e lea s e s o f f ugi t i v e e m i s s i o n s

. M o r e o v e r

, f or

s o m e o f t he f a c i l i t i e s ei t he r no e s t i m a t e wa s p r o v ided o r e s t i m a t e s we re

p r o v ide d f o r onl y one o f t he s ou rc e s o f f u g i t i v e du s t e m i s s i on s ( i

. e

.,

r oadwa ys)

, o r t he c al c ula t ion m e t h od u s e d w a s no t s u f f i c ien t l y e x p lained

o r do c u m en t ed.

T h e r e f o r e

, we ha v e de r i v ed new o r r e v i s e d d r a ft e s t i m a t e s of

f ugi t i v e e m i s s i o n s f o r s e v e r al o f t he f a c il i t i e s ba s ed upo n a r e v iew of

t he I CR r e s pon s e s and indu s t ry p r a c t i c e s and c a l c ula t ion m e t h o dologi e s.

W e ha v e t a k en in t o a cc ou n t t he s i z e o f t he f a c ili t y

, t he deg r ee t o wh i ch

f a c ili t ie s a r e c o n t a i ned wi t h in e n c lo s u r e s

, and t he r epo r t ed wo rk

p r a c t i c e s d e s cr i b ed i n y ou r s u rv e y

. M o r eo v e r

, we ana l y z ed a v ai l able

a m bien t m oni t o r ing da t a nea r t he s e f a c ili t ie s in r ela t ion t o i n i t i al

p r el i m i na ry m ode l ing e s t i m a t e s.

T h e d r a f t e s t i m a t e s f o r f ugi t i v e e m i s s i o n s we ha v e c al c ula t ed f or

y ou r f a c i li t y and t he o r igina l e s t i m a t e y o u p r o v i d ed i n t he s u rv e y a re

p r o v ide d i n t he t a ble below.

F a c i li t y | S t a t ed ba s i s f o r | E s t i m a t e | EP A d r a ft

| e s t i m a t e p r o v ided in | p r o v ided in | e s t i m a t e| s u rv e y | s u rv e y | ( t o n s / yr P b )

| | ( t on s / y r P b ) |

---- - ------------------- +

------------- - --------- +

----------------- +

--------------- - --

E x i de

, B a t on Rouge L A | Roadwa y f u gi t i v e s | 0

. 002 | 0

. 8 4

---- - ------------------- +

------------- - --------- +

----------------- +

--------------- - --

E x i de

, F o r e s t Ci t y M O | Non e p r o v i d ed | None p r o v id e d | 0

. 57

---- - ------------------- +

------------- - --------- +

----------------- +

--------------- - --

E x i de

, F r i s c o T X | Roadwa y f ugi t i v e s

, | 1

. 03 | 1

. 03

| r aw m a t e r ial | |

| s t o r ag e

, s lag | |

| h a ndling

, m a t e r i al | |

| handli n g

, bla s t and | |

| r e v e r b f ugi t i v e s

, | |

| r e f i ning and c a s t i n g | |

| f ugi t i v e s | |

---- - ------------------- +

------------- - --------- +

----------------- +

--------------- - --

E x i de

, M un c ie I N | Am bien t m o ni t o r ing | 0

. 2 2 | 0

. 26

---- - ------------------- +

------------- - --------- +

----------------- +

--------------- - --

E x i de

, Read i ng P A | Roadwa y f ugi t i v e s | 0

. 35 | 0

. 75

---- - ------------------- +

------------- - --------- +

----------------- +

--------------- - --

E x i de

, V e r non C A | Du s t anal ys i s ( ‘ 91 | 0

. 10 | 0

. 23

| and s ou rc e t e s t ’ 9 8 ) | |

W i t h t hi s e m a il we a r e p r o v i d ing y o u a n o p po r t u ni t y t o c o mm en t on

ou r r e v i s ed d r a f t e s t i m a t e s

, o r p r o v i de c a l c u la t ion s a nd d o c u m e n t a t ion

t o s u p po r t y ou r o r igin a l e s t i m a t e s

, and / o r p r o v ide al t e r na t i v e e s t i m a t es

t ha t y ou bel i e v e a r e m o r e a cc u r a t e

. I f y ou s u g ge s t al t e r na t i ve

e s t i m a t e s

, plea s e p r o v ide c o m ple t e do c u m en t a t i o n a nd e x pl a na t ion o f t he

ba s i s o f s u c h al t e r na t i v e s

. I f y ou w o uld li k e t o p r o v id e c o mm en t s,

add i t i o nal in f o r m a t i o n

, o r al t e r na t i v e e s t i m a t e s a nd do c u m en t a t i o n,

ple a s e s end a r e s pon s e t o t hi s e m ail b y F eb r ua ry 7 t h

, 2011.

S in c e r el y,

Chu ck F r en c h

, E n v i r on m en t al S c i en t i s t,

U

. S

. EPA

, O ff i c e o f A i r Q ual i t y P l anning and S t a nda r d s,

S e c t o r P oli c ie s and Pr og r a m D i v i s i on

P h one : 919

- 54 1

- 7912