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Da t e : 2 / 1 / 2011 4 : 34 PM

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

- R T R

- F ugi t i v e l ead e m i s s i on s a n d I CR r e s pon s es

Dea r Mr

. Ro y B a g ge t t,

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 r i sk a n d t e c hno l og y r e v i e w o f t h e S e c onda ry Lead Sm el t i ng s o u r ce

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 l e ad e m i s s i o n 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 r e s ul t s of

t he p r eli m ina ry di s pe rs ion m odel and t he v alue s r e c o r ded a t lo c al

a m bien t m oni t o rs wh i c h c ann o t be a cc oun t ed f o r b y t he s t a c k and 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

. I n y our

s u rv e y

, y ou p r o v ided an e s t i m a t e f o r f ug i t i v e le a d e m i ss ion s f r o m t he

ba tt e ry b r e a k e r

, de c a s ing o f b a t t e r ie s

, t he R MS bu i lding

, t r a ff i c

, and

f u r na c e and r e f i ning buil d ing

. How e v e r

, t h e c al c u l a t i on m e t hod u s ed was

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 e s t i m a t e s o f f u gi t i ve

e m i ss ion s f o r y ou r f a c i li t y ba s ed upo n a r e v iew o f t he I CR r e s po n s e s and

ind u s t ry p r a c t i c e s and c al c ula t ion m e t hodolo g ie s

. W e ha v e t a k e n i n to

a cc oun t t he s i z e o f t he f a c i li t y

, t h e d e g r ee t o whi c h f a c ili t ie s a re

c on t ained wi t hin en c lo s u r e s

, and t h e r ep o r t ed wo rk p r a c t i c e s de scr ibed

in y ou r s u r v e y

. M o r e o v e r

, we anal yz ed a v ailab l e a m b i en t m oni t o r ing da ta

nea r t he s e f a c i l i t i e s in r ela t io n t o p r eli m ina ry m odeli n g 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 we h a v e de r i v e d f o r y ou r f a c il i t y and t he

o r ig i nal e s t i m a t e y ou p r o v ided in t h e s u rv e y a r e a s f ollow s:

A

. S ande rs

, A L:1

. T he e s t i m a t e o f f ugi t i v e lead e m i ss ion s p r o v ided in y ou r s u rv ey

r e s pon s e = 3

. 24 t o n s pe r y ea r

, a n d t he s u rv e y r e s p o n s e i n di c a t e d t hat

t hi s e s t i m a t e wa s f o r ba t t e ry Br ea k e r

, de c a s t ing o f b a t t e r ie s

, R MS

B uildi n g T r a f f i c

, F u r na c e and Re f ining bu i lding.

2

. T he EPA d r a ft e s t i m a t e o f t o t al f ug i t i v e e m i ss ion s o f le a d f o r t h is

f a c ili t y = 1

. 4 t on s p e r y ea r.

W i t h t hi s e m a il

, we a r e p r o v idin g y ou wi t h an oppo r t uni t y to

c o mm en t on ou r r e v i s ed e s t i m a t e s

, p r o v i de c a l c ula t ion s and do c u m en t a t i on

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

, 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 c o mm en t o r p r o v ide

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

, p lea s e s e nd a r e s po n se

t o t hi s e m ail b y F eb r ua ry 8

, 2 011.

T han k Y ou.

Chu ck F r en ch