UNITED
STATES
ENVIRONMENTAL
PROTECTION
AGENCY
WASHINGTON,
D.
C.
20460
OFFICE
OF
PREVENTION,
PESTICIDES
AND
TOXIC
SUBSTANCES
November
4,
2004
Pick
Up
Mr.
Richard
L.
Conn
Charles
&
Conn,
LLC
6713
Catskill
Rd,
Lorton,
VA
22079­
1113
RE:
Ametryn
Preliminary
Risk
Assessments
Dear
Mr.
Conn
I
am
pleased
to
announce
the
initiation
of
the
Environmental
Protection
Agency's
(
EPA)
reregistration
eligibility
review
and
tolerance
reassessment
for
the
herbicide
ametryn
for
which
you
hold
a
technical
product
registration.
The
enclosed
human
health
and
ecological
risk
assessments
summarize
the
existing
database
and
describes
the
risks
associated
with
the
use
of
ametryn.
Within
the
next
30
days,
please
identify
and
comment
on
any
technical
errors
in
these
documents.
In
addition,
we
would
like
you
to
review
the
risk
assessment
documents
for
confidential
business
information
(
CBI),
and
inform
the
Agency
of
any
newly
completed,
pending,
or
planned
studies
involving
ametryn.

This
advance
opportunity
to
review
EPA's
pesticide
risk
assessments
for
errors
is
an
integral
part
of
a
wider
effort
to
involve
the
public
in
implementation
of
the
Food
Quality
Protection
Act
of
1996.
Accordingly,
EPA
is
following
the
public
participation
process
for
the
reregistration
of
ametryn,
as
described
in
the
Federal
Register
Notice
published
on
May
14,
2004
(
69
FR
26819).

Please
submit
your
technical
error
correction
comments
within
30
days
of
receipt
of
this
letter.
Upon
receipt,
we
will
evaluate
your
comments
and
prepare
a
written
response,
and
will
revise
the
risk
assessments,
as
necessary.
Errors
include
mathematical,
computational,
typographic,
or
other
similar
errors.
At
this
stage,
we
will
respond
only
to
errors
that
do
not
pertain
to
matters
of
policy,
interpretation,
or
applicability
of
data.
In
January
2005,
EPA
will
release
to
the
public
the
risk
assessments,
your
comments,
and
the
Agency's
review
and
discussion
of
your
comments.
These
documents
will
be
placed
in
a
Public
Docket
and
posted
on
EPA's
Internet
site.
The
EPA
will
announce
the
availability
of
these
documents
via
a
Notice
of
Availability
in
the
Federal
Register,
and
through
an
electronic
listserver
message.
2
of
2
After
reviewing
the
EPA's
risk
assessments,
please
inform
us
in
writing
of
any
claims
of
CBI
contained
in
these
assessments.
If
we
do
not
receive
notification
in
writing
of
any
such
claims
within
30
days,
we
will
assume
that
the
documents
are
free
of
CBI.
Also,
please
inform
us
of
any
pertinent,
on­
going
or
planned
studies,
or
other
sources
of
information
on
ametryn
and
your
timetable
for
completing
and
submitting
such
data
and
information
to
the
Agency.
This
will
enable
EPA
to
plan
better
for
refining
its
risk
assessments
and
completing
reregistration
and
tolerance
reassessment.

Please
send
your
response,
including
any
claims
of
CBI
and
other
information,
in
both
printed
and
electronic
form
to
Mark
Howard,
the
Chemical
Review
Manager
for
ametryn.
If
you
have
any
questions,
please
contact
him
at
(
703)
308­
8172.

Sincerely,

Michael
Goodis,
Chief
Reregistration
Branch
3
Special
Review
and
Reregistration
Division
7
Enclosures
(
6):

EFED
Reregistration
Eligibility
Document
and
Risk
Assessment
for
the
use
of
Ametryn
on
corn,
pineapple
and
sugarcane.
November
3,
2004
Ametryn:
HED
Chapter
of
the
Reregistration
Eligibility
Decision
Document
(
RED).
November
3,
2004
Ametryn
RED
­
Reregistration
Eligibility
Decision.
Product
Chemistry
Considerations.
November
3,
2004
Ametryn.
Chronic
and
Cancer
Dietary
Exposure
Assessments
for
the
Reregistration
Eligibility
Decision.
October
6,
2004
AMETRYN:
Report
of
the
Cancer
Assessment
Review
Committee.
September
17,
2004.

Ametryn.
Occupational
and
Residential
Exposure
Chapter
of
the
Reregistration
Eligibility
Decision
Document
(
RED).
October
19,
2004
Ametryn.
Residue
Chemistry
Considerations
for
Reregistration
Eligibility
Decision.
November
3,
2004
Includes
the
review
of
MRIDs:
44783702,
44477706,
4473701,
44477705,
44477704,
44107901,
44477701,
44477702,
43931001
