LYONDELL
Gail
B.
Kelly
Manager,
Solvents
Development
3801
West
Chester
Pike
Newtown
Square,
PA
19073
Telephone:
61
0­
3596443
Fax:
610­
359­
3155
E­
mail:
gail.
kelly@
lyondell.
com
August
27,2001
Terry
J.
Keating,
Ph.
D.
AAAS
Environmental
Science
Fellow
EPA
Office
of
Air
and
Radiation
Ariel
Rios
North
5442
(
MC6
103A)
1200
Pennsylvania
Ave,
N
W
Washington
DC
20460
Dear
Dr.
Keating:

In
response
to
your
request,
Lyondell
is
providing
a
copy
(
attached)
of
our
submittal
to
the
California
Air
Resources
Board,
summarizing
the
toxicological
data
for
tertiary­
butyl
acetate
(
TBAc).
As
explained
in
that
submittal,
we
believe
the
existing
data
indicate
that
TBAc
is
of
a
low
order
of
toxicity
and
would
not
present
significant
health
or
environmental
concerns
from
its
use
as
a
solvent.
On
the
other
hand,
use
of
TBAc
could
provide
a
health
benefit
to
the
extent
it
replaces
use
of
solvents
that
are
Clean
Air
Act
hazardous
air
pollutants
or
that
have
hijjher
photochemical
reactivity
and
so
contribute
to
ozone
formation.

We
hope
this
information
is
helpful
to
you.
Please
feel
free
to
call,
write,
or
email
me
with
any
questions.

Sincerely,

W
Gail
B.
Kelly
Attachment
Lyondell
Chemical
Company
