UNITED
STATES
ENVIRONMENTAL
PROTECTION
AGENCY
WASHINGTON,
D.
C.
20460
OFFICE
OF
PREVENTION,
PESTICIDES
AND
TOXIC
SUBSTANCES
MEMORANDUM
SUBJECT:
ADDENDUM
to
the
Ecological
risk
assessment
for
67979­
EUP­
U,
from
Syngenta,
Inc.
for
corn
containing
Bacillus
thuringiensis
Cry3A
protein
for
control
of
corn
root
worm
(
Diabrotica
spp.)

FROM:
Gail
S.
Tomimatsu,
Ph.
D.
/
s/
14
March
2005
Microbial
Pesticides
Branch
Biopesticides
and
Pollution
Prevention
Division,
7511C
TO:
Michael
Mendelsohn,
Senior
Regulatory
Specialist
Biopesticides
and
Pollution
Prevention
Division
7511C
DP
Barcodes:
DP300338
Decision
No.
339682
MRID#'
s:
46155616,
46155617,
46155618,
46155619
OPP
Chemical
Code:
6509
Pesticide
Name:
Modified
Bacillus
thuringiensis
Cry3A
(
mCry3A)
insecticidal
protein
and
genetic
material
necessary
for
its
expression.
The
testing
will
be
done
on
corn
(
maize)
developed
with
event
MIR604
via
elements
of
PZM26.
Registrant:
Syngenta
Seeds,
Inc.
 
Field
Crops
­
NAFTA,
P.
O.
Box
12557,
3054
Cornwallis
Rd.
Research
Triangle
Park,
NC
27709­
2257
Classification:
Acceptable
for
the
limited
duration
and
acreage
for
the
Experimental
Use
Permit.
Field
scouting
is
recommended
for
soil
and
phylloplane
coleopteran
and
other
invertebrate
abundance
during
the
duration
of
the
EUP.

Per
request
of
Mike
Mendelsohn,
Senior
Regulatory
Specialist,
this
addendum
provides
further
understanding
and
clarity,
that
should
a
temporary
tolerance
be
granted,
and
should
MIR605
corn
be
used
for
food
or
feed,
the
conclusion(
s)
of
the
02/
15/
05
ecological
risk
assessment
remain
unchanged.

Based
on
the
information
submitted,
no
significant
or
irreversible
hazards
from
mCry3A
transgenic
corn
to
non­
target
organisms
are
anticipated
for
the
duration
of
this
limited
acreage
experimental
use
program
provided
that
testing
does
not
take
place
in
the
vicinity
of
endangered
beetle
habitats.
2
