Document ID: EPA-HQ-OPP-2002-0192-0001
Agency: epa
Document Type: Notice
Title: Diquat Dibromide; Notice of Availability of Decision on Syngenta's Request to Modify Requirements and Closure of 1995 RED
Posted Date: 2002-09-18T04:00Z

58797
Federal
Register
/
Vol.
67,
No.
181
/
Wednesday,
September
18,
2002
/
Notices
Screening
Program.
Chlorpropham
will
be
reevaluated
at
that
time
and
additional
studies
may
be
required.
Additionally,
the
Agency
has
evaluated
the
dietary
risk
associated
with
chlorpropham
and
has
determined
that
provided
the
Special
Local
Need
(
SLN)
registration
for
Easter
lily
bulb
use
is
amended
to
reduce
the
maximum
rate
of
application
from
3.99
pounds
active
ingredient/
acre
to
2.0
pounds
active
ingredient/
acre,
as
agreed
upon
by
stakeholders,
there
is
a
reasonable
certainty
that
no
harm
to
any
population
subgroup
will
result
from
aggregate
exposure
to
chlorpropham
when
considering
dietary
exposure
and
all
other
non­
occupational
sources
of
pesticide
exposure
for
which
there
is
reliable
information.
Therefore,
with
this
mitigation
measure
in
place,
15
tolerances
are
now
considered
reassessed
and
9
new
tolerances
will
be
established
for
residues
of
chlorpropham
in/
on
raw
agricultural
commodities
under
section
408(
q)
of
the
FFDCA.
All
registrants
of
pesticide
products
containing
the
active
ingredient
listed
in
this
document
have
been
sent
the
appropriate
TRED
document,
and
must
respond
to
labeling
requirements
within
8
months
of
receipt.
In
addition,
the
Agency
requests
a
response
to
the
generic
Data
Call­
In
(
DCI)
letter
from
technical
registrants
within
90
days
of
receipt.
The
reregistration
program
is
being
conducted
under
Congressionallymandated
time
frames,
and
EPA
recognizes
both
the
need
to
make
timely
reregistration
decisions
and
to
involve
the
public.
All
comments
received
within
30
days
of
publication
of
this
Federal
Register
notice
will
be
considered
by
the
Agency.
If
any
comment
significantly
impacts
this
TRED,
the
Agency
will
amend
its
decision
by
publishing
a
Federal
Register
notice.

B.
What
is
the
Agency's
Authority
for
Taking
this
Action?

The
legal
authority
for
this
TRED
falls
under
FIFRA,
as
amended
in
1988
and
1996.
Section
4(
g)(
2)(
A)
of
FIFRA
directs
that,
after
submission
of
all
data
concerning
a
pesticide
active
ingredient,
``
the
Administrator
shall
determine
whether
pesticides
containing
such
active
ingredient
are
eligible
for
reregistration,''
and
either
reregistering
products
or
taking
``
other
appropriate
regulatory
action.''

List
of
Subjects
Environmental
protection,
Pesticides,
Tolerances.
Dated:
September
10,
2002.
Lois
A.
Rossi,
Director,
Special
Review
and
Reregistration
Division,
Office
of
Pesticide
Programs.
[
FR
Doc.
02
 
23593
Filed
9
 
17
 
02;
8:
45
am]

BILLING
CODE
6560
 
50
 
S
ENVIRONMENTAL
PROTECTION
AGENCY
[
OPP
 
2002
 
0192;
FRL
 
7197
 
9]

Diquat
Dibromide;
Notice
of
Availability
of
Decision
on
Syngenta's
Request
to
Modify
Label
Requirements
and
Closure
of
1995
RED
AGENCY:
Environmental
Protection
Agency
(
EPA).

ACTION:
Notice.

SUMMARY:
This
notice
announces
EPA's
intention
to
modify
certain
occupational
and
residential
risk
mitigation
measures
that
were
imposed
as
a
result
of
the
1995
Reregistration
Eligibility
Decision
(
RED)
for
diquat
dibromide.
At
the
end
of
the
comment
period,
the
Agency
will
consider
this
action
an
immediate
final
decision
and
the
1995
RED
closed,
unless
adverse
comments
are
received.
The
Agency
conducted
this
reassessment
in
response
to
new
data
submitted
by
the
technical
registrant,
Syngenta
Crop
Protection,
Inc.
Syngenta
has
requested
the
Agency
modify
certain
diquat
dibromide
label
requirements
including:
Personal
protective
equipment
(
PPE),
closed
loading
system
for
aerial
applications,
reentry
intervals,
and
allow
residential
broadcast
spray
uses.

DATES:
Comments,
identified
by
docket
identification
(
ID)
number
OPP
 
2002
 
0192,
must
be
received
on
or
before
October
18,
2002.

ADDRESSES:
Comments
may
be
submitted
by
mail,
electronically,
or
in
person.
Please
follow
the
detailed
instructions
for
each
method
as
provided
in
Unit
I.
of
the
SUPPLEMENTARY
INFORMATION.
To
ensure
proper
receipt
by
EPA,
it
is
imperative
that
you
identify
docket
ID
number
OPP
 
2002
 
0192
in
the
subject
line
on
the
first
page
of
your
response.

FOR
FURTHER
INFORMATION
CONTACT:
Tyler
Lane,
Special
Review
and
Reregistration
Division
(
7508C),
Office
of
Pesticide
Programs,
Environmental
Protection
Agency,
1200
Pennsylvania
Ave.,
NW.,
Washington,
DC
20460;
telephone
number:
(
703)
305
 
2737;
email
address:
lane.
tyler@
epa.
gov.

SUPPLEMENTARY
INFORMATION:
I.
General
Information
A.
Does
this
Action
Apply
to
Me?

This
action
is
directed
to
the
public
in
general,
nevertheless,
a
wide
range
of
stakeholders
will
be
interested
in
obtaining
information
on
the
label
adjustments
for
diquat
dibromide,
including
environmental,
human
health,
and
agricultural
advocates;
the
chemical
industry;
pesticide
users;
and
members
of
the
public
interested
in
the
use
of
pesticides
on
food.
Since
other
entities
also
may
be
interested,
the
Agency
has
not
attempted
to
describe
all
the
specific
entities
that
may
be
affected
by
this
action.
If
you
have
any
questions
regarding
the
applicability
of
this
action
to
a
particular
entity,
consult
the
person
listed
under
FOR
FURTHER
INFORMATION
CONTACT.

B.
How
Can
I
Get
Additional
Information,
Including
Copies
of
this
Document
and
Other
Related
Documents?

1.
Electronically.
You
may
obtain
electronic
copies
of
this
document,
and
certain
other
related
documents
that
might
be
available
electronically,
from
the
EPA
Internet
Home
Page
at
http://
www.
epa.
gov/.
On
the
Home
Page
select
``
Laws
and
Regulations,''
``
Regulations
and
Proposed
Rules,''
and
then
look
up
the
entry
for
this
document
under
the
``
Federal
Register
 
Environmental
Documents.''
You
can
also
go
directly
to
the
Federal
Register
listings
at
http://
www.
epa.
gov/
fedrgstr/.
Copies
of
the
tolerance
reassessment
decision
and
supporting
risk
assessment
documents
for
the
reregistration
of
diquat
dibromide
may
also
be
accessed
at
http:/
/
www.
epa.
gov/
pesticides/
reregistration/
diquat_
dibromide.
htm.
2.
In
person.
The
Agency
has
established
an
official
record
for
this
action
under
docket
ID
number
OPP
 
2002
 
0192.
The
official
record
consists
of
the
documents
specifically
referenced
in
this
action,
and
other
information
related
to
this
action,
including
any
information
claimed
as
Confidential
Business
Information
(
CBI).
This
official
record
includes
the
documents
that
are
physically
located
in
the
docket,
as
well
as
the
documents
that
are
referenced
in
those
documents.
The
public
version
of
the
official
record
does
not
include
any
information
claimed
as
CBI.
The
public
version
of
the
official
record
is
available
for
inspection
in
the
Public
Information
and
Records
Integrity
Branch
(
PIRIB),
Rm.
119,
Crystal
Mall
#
2,
1921
Jefferson
Davis
Hwy.,
Arlington,
VA,
from
8:
30
a.
m.
to
4
p.
m.,
Monday
through
Friday,
excluding
legal
holidays.
The
PIRIB
telephone
number
is
(
703)
305
 
5805.

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/
Vol.
67,
No.
181
/
Wednesday,
September
18,
2002
/
Notices
C.
How
and
to
Whom
Do
I
Submit
Comments?

You
may
submit
comments
through
the
mail,
in
person,
or
electronically.
To
ensure
proper
receipt
by
EPA,
it
is
imperative
that
you
identify
docket
ID
number
OPP
 
2002
 
0192
in
the
subject
line
on
the
first
page
of
your
response.
1.
By
mail.
Submit
your
comments
to:
Public
Information
and
Records
Integrity
Branch
(
PIRIB),
Information
Resources
and
Services
Division
(
7502C),
Office
of
Pesticide
Programs
(
OPP),
Environmental
Protection
Agency,
1200
Pennsylvania
Ave.,
NW.,
Washington,
DC
20460.
2.
In
person
or
by
courier.
Deliver
your
comments
to:
Public
Information
and
Records
Integrity
Branch
(
PIRIB),
Information
Resources
and
Services
Division
(
7502C),
Office
of
Pesticide
Programs
(
OPP),
Environmental
Protection
Agency,
Rm.
119,
Crystal
Mall
#
2,
1921
Jefferson
Davis
Highway,
Arlington,
VA.
The
PIRIB
is
open
from
8:
30
a.
m.
to
4
p.
m.,
Monday
through
Friday,
excluding
legal
holidays.
The
PIRIB
telephone
number
is
(
703)
305
 
5805.
3.
Electronically.
You
may
submit
your
comments
electronically
by
e­
mail
to:
opp­
docket@
epa.
gov,
or
you
can
submit
a
computer
disk
as
described
above.
Do
not
submit
any
information
electronically
that
you
consider
to
be
CBI.
Avoid
the
use
of
special
characters
and
any
form
of
encryption.
Electronic
submissions
will
be
accepted
in
WordPerfect
6.1/
8.0/
9.0
or
ASCII
file
format.
All
comments
in
electronic
form
must
be
identified
by
docket
ID
number
OPP
 
2002
 
0192.
Electronic
comments
may
also
be
filed
online
at
many
Federal
Depository
Libraries.

D.
How
Should
I
Handle
CBI
That
I
Want
to
Submit
to
the
Agency?

Do
not
submit
any
information
electronically
that
you
consider
to
be
CBI.
You
may
claim
information
that
you
submit
to
EPA
in
response
to
this
document
as
CBI
by
marking
any
part
or
all
of
that
information
as
CBI.
Information
so
marked
will
not
be
disclosed
except
in
accordance
with
procedures
set
forth
in
40
CFR
part
2.
In
addition
to
one
complete
version
of
the
comment
that
includes
any
information
claimed
as
CBI,
a
copy
of
the
comment
that
does
not
contain
the
information
claimed
as
CBI
must
be
submitted
for
inclusion
in
the
public
version
of
the
official
record.
Information
not
marked
confidential
will
be
included
in
the
public
version
of
the
official
record
without
prior
notice.
If
you
have
any
questions
about
CBI
or
the
procedures
for
claiming
CBI,
please
consult
the
person
identified
under
FOR
FURTHER
INFORMATION
CONTACT.

E.
What
Should
I
Consider
as
I
Prepare
My
Comments
for
EPA?

You
may
find
the
following
suggestions
helpful
for
preparing
your
comments:
1.
Explain
your
views
as
clearly
as
possible.
2.
Describe
any
assumptions
that
you
used.
3.
Provide
copies
of
any
technical
information
and/
or
data
you
used
that
support
your
views.
4.
If
you
estimate
potential
burden
or
costs,
explain
how
you
arrived
at
the
estimate
that
you
provide.
5.
Provide
specific
examples
to
illustrate
your
concerns.
6.
Make
sure
to
submit
your
comments
by
the
deadline
in
this
document.
7.
To
ensure
proper
receipt
by
EPA,
be
sure
to
identify
the
docket
ID
number
assigned
to
this
action
in
the
subject
line
on
the
first
page
of
your
response.
You
may
also
provide
the
name,
date,
and
Federal
Register
citation.

II.
Background
A.
What
Action
is
the
Agency
Taking?

In
1995,
the
Agency
published
its
Reregistration
Eligibility
Decision
(
RED)
for
diquat
dibromide.
Subsequent
to
the
publication
of
the
1995
RED,
the
technical
registrant
submitted
additional
data
to
further
refine
diquat
dibromide
worker
exposure
and
residential
broadcast
spray
use
scenarios.
Changes
to
the
PPE
label
requirements
of
the
1995
RED
are
based
on
the
submission
of
additional
data
from
a
biomonitoring
study
of
knapsack
applications
of
the
closely
related
chemical
paraquat,
and
a
reconsideration
of
the
acute
dermal
toxicity
endpoint.
The
Agency
reevaluated
the
dermal
toxicity
endpoint
and
rendered
a
decision
that
the
repeated
dose
dermal
toxicity
study
used
for
the
1995
RED
was
not
appropriate
for
use
in
the
risk
assessment
because
the
skins
of
the
rats
used
in
the
study
were
compromised.
Instead,
the
Agency
extrapolated
a
dermal
toxicity
endpoint
from
a
shortterm
oral
study
on
rabbits.
The
Agency
has
also
reevaluated
dermal
absorption
assumptions.
Previously,
EPA
assumed
a
standard
absorption
rate
of
4.1%,
based
on
a
rat
dermal
absorption
study.
Syngenta
cited
a
human
dermal
absorption
study
estimating
a
0.3%
dermal
absorption
rate
for
diquat
dibromide
(
Feldman
RJ
and
Maibach
HI,
``
Percutaneous
penetration
of
some
pesticides
and
herbicides
in
man''
Tox.
Appl.
Pharm.
28
126
 
132,
1974).
The
Agency
has
relied
on
data
provided
by
the
Feldman­
Maibach
study
for
previous
risk
assessments,
and
believes
the
study
to
be
acceptable
and
the
data
valid
for
use
in
this
risk
assessment.
The
use
of
the
dermal
absorption
factor
of
0.3%
further
refines
all
aggregate
margins
of
exposure
(
MOEs)
above
the
target
MOE
of
100,
which
would
not
be
of
concern
to
the
Agency.
The
Agency
has
evaluated
the
request
to
modify
the
cited
label
requirements
and
summarized
its
assessment
in
the
Occupational
Risk
Evaluation:
``
Assessing
Syngenta's
Request
to
Modify
Diquat
Dibromide
Label
Requirements,''
dated
February
14,
2002.
In
addition,
the
``
HED
Risk
Assessment
for
Tolerance
Reassessment
Eligibility
Document
(
TRED),''
March
6,
2002,
and
the
``
Re­
characterization
of
Risk
for
the
Diquat
Dibromide
Tolerance
Reassessment
Eligibility
Decision
(
TRED)
Based
on
New
Dermal
Absorption
Data,''
March
13,
2002,
were
used
to
aid
in
the
assessment
of
aggregate
risks
from
residential
uses.
Any
labeling
changes
are
presented
in
the
``
Required
Labeling
Changes
Summary
Table,''
which
summarizes
the
labeling
requirements
for
this
action.
All
supporting
documents
referenced
in
this
document
are
available
in
the
public
docket
and
at
http://
www.
epa.
gov/
pesticides/
reregistration/
diquat_
dibromide.
htm.
In
summary,
the
Agency
expects
to
change
the
label
requirements
of
the
1995
RED
for
worker
PPE
and
residential
broadcast
spray
uses.
The
following
table
presents
the
1995
RED
decisions
being
reevaluated,
the
requests
to
change
these
requirements
made
by
Syngenta,
and
the
current
Agency
decisions
to
amend
the
1995
RED:

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Vol.
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181
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Wednesday,
September
18,
2002
/
Notices
July
1995
RED
Syngenta
Request
Amendments
to
1995
RED
All
workers
required
to
wear
a
double
layer
of
clothing
(
coveralls
over
long
sleeved
shirt,
long
pants),
chemical
resistant
gloves,
chemical
resistant
footwear
plus
socks,
chemical
resistant
headgear
for
overhead
exposure,
and
a
chemical
resistant
apron
when
cleaning
equipment,
mixing
or
loading)
Reduced
PPE
requirements
due
potential
for
heat
stress
to
field
workers
and
applicators
All
workers
must
continue
to
wear
protective
footwear
and
coveralls
over
a
single
layer
of
clothes
(
products
with
a
dermal
toxicity
of
III
or
IV
may
reduce
PPE
to
protective
footwear
and
coveralls
over
short
pants
and
short
sleeve
shirts).
Mixers,
loaders
and
hand
applicators
must
wear
chemical
resistant
gloves,
while
applicators
who
are
operating
closed
cab
equipment
are
not
required
to
wear
chemical
resistant
gloves
due
to
MOEs
over
1,000.

Respirators
for
mixing
and
loading
No
respirator
requirements
for
mixing
and
loading
due
to
potential
for
heat
stress
Respirator
requirement
for
mixer/
loaders
reduced
to
a
face
shield
to
prevent
droplets
from
entering
the
eyes,
mouth
or
nose
areas
Closed
mixing
system
for
aerial
applications.
Open
mixing
system
for
aerial
applications
Closed
mixing/
loading
requirements
remain
for
aerial
applications

7
 
Day
restricted
entry
interval
(
REI)
for
products
used
under
the
Worker
Protection
Standard
(
WPS)
unless
there
is
no
contact
with
treated
surfaces
(
such
as
mechanical
harvesting)
4
 
Hour
REI
for
potato
desiccation
and
seed
crops
REI
reduced
to
24
hours
for
all
WPS
uses,
based
on
default
reentry
analysis
findings
of
MOEs
between
150
and
1,500
and
a
toxicity
category
II
for
eye
irritation
4
 
Day
REI
for
non­
WPS
uses
other
than
aquatic
and
spot
treatment
at
residential
sites
REI
when
spray
is
dry
for
non­
WPS
uses
REI
reduced
to
``
when
sprays
are
dry''
for
non­
WPS
uses,
also
based
on
default
reentry
analysis
Prohibition
of
broadcast
spray
applications
for
homeowner
and
residential
uses
Broadcast
spray
applications
for
homeowner
and
residential
uses
Generic
data
requirements
have
been
fulfilled
for
residential
broadcast
spray
uses.
Broadcast
spray
applications
for
homeowner
and
residential
uses
for
enduse
products
will
be
decided
on
a
case­
by­
case
basis
upon
review
of
end­
use
product
toxicity,
based
on
short­
term
exposure
and
individual
risk
assessments.

B.
What
is
the
Agency's
Authority
for
Taking
this
Action?

The
legal
authority
for
this
decision
falls
under
FIFRA,
as
amended
in
1988
and
1996.
Section
4(
g)(
2)(
A)
of
FIFRA
directs
that,
after
submission
of
all
data
concerning
a
pesticide
active
ingredient,
``
the
Administrator
shall
determine
whether
pesticides
containing
such
active
ingredient
are
eligible
for
reregistration,''
and
either
reregister
products
or
take
other
``
appropriate
regulatory
action.''

List
of
Subjects
Environmental
protection,
Chemicals,
Aquatic
herbicides.

Dated:
September
5,
2002.

Lois
Rossi,

Director,
Special
Review
and
Reregistration
Division,
Office
of
Pesticide
Programs.
[
FR
Doc.
02
 
23594
Filed
9
 
17
 
02;
8:
45
am]

BILLING
CODE
6560
 
50
 
S
ENVIRONMENTAL
PROTECTION
AGENCY
[
OPP
 
2002
 
0201;
FRL
 
7194
 
5]

Notice
of
Filing
a
Pesticide
Petition
to
Establish
a
Tolerance
for
a
Certain
Pesticide
Chemical
in
or
on
Food
AGENCY:
Environmental
Protection
Agency
(
EPA).
ACTION:
Notice.

SUMMARY:
This
notice
announces
the
initial
filing
of
a
pesticide
petition
proposing
the
establishment
of
regulations
for
residues
of
a
certain
pesticide
chemical
in
or
on
various
food
commodities.
DATES:
Comments,
identified
by
docket
ID
number
OPP
 
2002
 
0201,
must
be
received
on
or
before
October
18,
2002.
ADDRESSES:
Comments
may
be
submitted
by
mail,
electronically,
or
in
person.
Please
follow
the
detailed
instructions
for
each
method
as
provided
in
Unit
I.
C.
of
the
SUPPLEMENTARY
INFORMATION.
To
ensure
proper
receipt
by
EPA,
it
is
imperative
that
you
identify
docket
ID
number
OPP
 
2002
 
0201
in
the
subject
line
on
the
first
page
of
your
response.

FOR
FURTHER
INFORMATION
CONTACT:
By
mail:
Bipin
Gandhi,
Registration
Division
(
7505C),
Office
of
Pesticide
Programs,
Environmental
Protection
Agency,
1200
Pennsylvania
Ave.,
NW.,
Washington,
DC
20460;
telephone
number:
(
703)
308
 
8380;
e­
mail
address:
gandhi.
bipin@
epa.
gov.

SUPPLEMENTARY
INFORMATION:

I.
General
Information
A.
Does
this
Action
Apply
to
Me?

You
may
be
affected
by
this
action
if
you
are
an
agricultural
producer,
food
manufacturer
or
pesticide
manufacturer.
Potentially
affected
categories
and
entities
may
include,
but
are
not
limited
to:

Categories
NAICS
Codes
Examples
of
potentially
affected
entities
Industry
111
Crop
production
112
Animal
production
311
Food
manufacturing
32532
Pesticide
manufacturing
This
listing
is
not
intended
to
be
exhaustive,
but
rather
provides
a
guide
for
readers
regarding
entities
likely
to
be
affected
by
this
action.
Other
types
of
entities
not
listed
in
the
table
could
also
be
affected.
The
North
American
Industrial
Classification
System
(
NAICS)
codes
have
been
provided
to
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21:
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