F r o m : < F r en c h

. Chu ck @ epa m ail

. ep a

. go v>

T o: < j lan z a f a m e @ do e r u n

. c o m>

CC: Donn a La zz a r i < D o nna

. La z z a r i @ e r g

. c o m>

, < m i c hael

. bu rr @ e r g

. c o m>

,

< T opha m

. Na t han @ ep a m a il

. epa

. go v>

Da t e : 1 / 31 / 2011 5 : 43 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 M r

. Lan z a f a m e,

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 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 d r a ft 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 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 t he S e c ond a r y Lea d Sm el t ing

f a c ili t ie s

. W e a r e now in t he p r o c e s s o f c on d u c t i n g d i s p e r s i on m o d eling

o f t he 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 o und a

di scr epan cy be t ween t h e p r e li m ina ry r e s u l t s o f t he di s pe rs io n m ode l and

t he v a lue s r e c o r d ed a t lo c al a m bie n 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 ck and f u g i t i v e e m i ss ion s r epo r t ed

. E P A a ss u m e s t he s t a ck

e m i ss ion s a r e gene r all y r eli a ble a s t he y a r e ba s ed on a c t ual t e s t da t a,

and t he p r i m a ry c au s e o f t he di scr epan cy i s d ue t o r elea s e s o f f ugi t i ve

e m i ss ion s

. I n t he s u rv e y

, Doe Run p r o v ide d e s t i m a t e s f o r r oadway

f ugi t i v e s

, bu t did no t p r o v i de a n e s t i m a t e f o r t he o t h e r po ss ib le

s ou rc e s o f

f ugi t i v e e m i s s i o n s (s u c h a s f ugi t i v e s f r o m s t o r age pile s,

s lag hand l ing

, f ugi t i v e s whi c h e s c a pe f r o m build i ng s

, e t c

. ).

T h e r e f o r e

, we ha v e de r i v ed a d r a f t e s t i m a t e o f f ugi t i v e e m i ss ions

f o r y o u r f a c ili t y b a s ed u pon a r e v i e w o f t h e I CR r e s pon s e s a nd i ndu s t ry

p r a c t i c e s a n d c a l c u l a t i on m e t hod o logie s

. W e h a v e t a k en in t o a c c o u n t t he

s i z e o f t he f a c i l i t y

, t h e de g r ee t o whi c h t he f a c il i t y i s c on t ai n ed

wi t hin en 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 de scr ibed in y our

s u rv e y

. M o r eo v e r

, we anal yz ed a v ail a ble a m bien t m on i t o r i ng d a t a ne ar

t he f a c i l i t y in r ela t ion t o i ni t ial 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 we ha v e c a l c u l a t e d f o r f u gi t i v e e m i ss ion s 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 h e r e:

B ui ck Re s o u r c e Re cyc ling F a c i li t y:1

. Es 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 r v ey

r e s pon s e = 0

. 02 t o n s pe r y ea r ( f o r r oadw a y s)

2

. EP A d r a f t e s t i m a t e o f t o t a l f ugi t i v e lead e m i ss ion s f o r t his

f a c ili t y = 3

. 13 t on s p e r y ear

A n y wa y

, wi t h t h i s e m ail we a r e p r o v idin g y ou 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 7 t h

, 20 1 1.

T h an k Y ou,

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