Document ID: EPA-HQ-OPP-2005-0258-0019
Agency: epa
Document Type: Supporting & Related Material
Title: 
Posted Date: 2006-02-15T05:00Z

UNITED
STATES
ENVIRONMENTAL
PROTECTION
AGENCY
WASHINGTON,
D.
C.
20460
OFFICE
OF
PREVENTION,
PESTICIDES
AND
TOXIC
SUBSTANCES
Aug.
31,
2005
PC
Code:
109901
DP
Barcode:
316941
MEMORANDUM
SUBJECT:
Tier
2
Drinking
Water
Assessment
for
Triadimefon
and
its
Major
Degradate
Triadimenol
FROM:
Jonathan
Angier,
Ph.
D.
Environmental
Risk
Branch
2
Environmental
Fate
and
Effects
Division
(
7507C)

TO:
Robert
McNally,
Branch
Chief
Special
Review
and
Reregistration
Division
(
7508C)

THRU:
Tom
A.
Bailey,
Ph.
D.
Chief,
Environmental
Risk
Branch
2
Environmental
Fate
and
Effects
Division
(
7507C)

This
drinking
water
assessment
for
triadimefon
and
its
major
degradate
triadimenol
reflects
current
information
about
the
potential
impact
of
total
triadimefon
residues
on
both
surface­
and
ground­
water
drinking
water
sources.
This
document
is
a
refinement
of
the
previous
drinking
water
assessment,
in
that
an
additional
scenario
has
been
included
that
is
intended
to
reflect
new
information
imparted
by
Bayer
CropScience
(
registrant)
regarding
what
may
be
considered
`
typical
use.'
Also,
an
addendum
to
this
refined
drinking
water
assessment
has
been
included
to
present
other
"
what­
if"
scenarios
that
reflect
the
potential
impact
of
golf
course
turf
applications
where
only
part
of
the
area
is
treated.
This
document
supersedes
all
previous
drinking
water
assessments.

Total
triadimefon
residues
(
parent
plus
triadimenol)
are
moderately
mobile
and
persistent.
Triadimefon
transforms
into
triadimenol
in
the
natural
environment,
particularly
in
shallow
subsurface
soil.
Triadimefon
on
or
near
the
soil
surface
or
on
vegetation
may
be
subject
to
runoff
and/
or
erosion
into
surface
water
bodies
used
as
drinking
water
supplies.
Triadimefon
and
triadimenol
may
also
leach
into
groundwater
when
triadimefon
is
applied
in
areas
with
welldrained
soil,
high
rainfall
(
and/
or
irrigation)
rates,
and
shallow
water
tables.
Once
it
reaches
groundwater,
triadimenol
is
likely
to
degrade
even
more
slowly
than
the
parent
compound.
Both
parent
and
degradate
are
stable
to
hydrolysis
and
have
fairly
long
half­
lives
in
soil
and
water.
Most
municipal
groundwater
supplies
are
obtained
from
deeper,
confined
aquifers
less
at
risk
of
contamination.
However,
shallow
private
wells
can
become
contaminated
in
sensitive
areas
where
triadimefon
is
used.

Surface
Water
In
the
Tier
2
analysis,
we
have
chosen
to
model
three
crop
scenarios:
Oregon
Christmas
tree,
Pennsylvania
apple,
and
Florida
turf.
They
represent
different
areas
of
the
U.
S.
and
characteristic
regions
where
these
crops
are
commonly
grown.
These
particular
scenarios
were
chosen
because
they
have
the
highest
labeled
use
rates
and
are
expected
to
present
the
greatest
risks
to
drinking
water
supplies.
An
additional
evaluation
for
the
Florida
turf
scenario
that
encompasses
3
applications
rather
than
26
total
annual
applications
has
been
added
to
this
refined
risk
assessment.
This
additional
evaluation
is
included
at
the
behest
of
the
registrant
(
Bayer
CropScience)
and
is
based
on
new
information
provided
by
them.
It
is
intended
to
reflect
`
typical'
rather
than
maximum
usage;
however,
since
this
information
is
not
currently
included
on
the
labels,
results
from
this
new
evaluation
should
be
used
for
comparison
only.

For
the
PRZM­
EXAMS
model,
some
initial
assumptions/
simplifications
were
made:
1)
Treated
total
residues
(
parent
triadimefon
plus
the
degradate
triadimenol)
as
a
single
component,
in
terms
of
fate
properties
(
half­
lives,
etc.).
Most
of
the
parent
converts
to
the
degradate
of
concern,
triadimenol,
which
is
generally
more
persistent
in
the
environment
and
thus
cannot
be
ignored.
2)
Assigned
an
application
depth
for
the
total
residues
of
0
cm
to
reflect
surface
applications
(
in
this
case,
aerial
and
ground
spray).
3)
Set
the
input
parameters
that
are
most
relevant
to
processes
that
occur
at
or
near
time
of
application
(
molecular
weight,
vapor
pressure,
solubility,
Koc,
and
photolysis)
to
reflect
the
characteristics
of
the
parent
alone,
because
that
is
what
is
applied
to
the
field.
These
values
are
very
close
to
those
for
triadimenol;
there
is
little
or
no
impact
on
the
overall
risk
assessment
if
the
input
values
for
the
degradate
are
used
instead.
Other
inputs
that
are
relevant
to
transport,
fate,
and
persistence
of
the
compound
(
soil
and
water
half­
lives)
are
derived
from
characteristics
of
total
residues
(
parent
+
triadimenol,
as
determined
from
MRID
#
42224104
&
42401201)
since
the
degradate
starts
to
form
soon
after
application.
4)
The
aerobic
soil
half­
life
for
total
residues
(
triadimefon
+
triadimenol)
was
determined
to
be
240
days
(
MRID
#
42224104),
calculated
by
combining
radioactivity
of
both
compounds
for
the
duration
of
the
study
(
364
days)
and
applying
a
2­
parameter
exponential
decay
function
(
r2
=
0.99,
p
<
0.0001).
The
aerobic
aquatic
half­
life
for
total
residues
of
concern
is
then
480
days
(
MRID
#
42224104),
which,
in
the
absence
of
data,
was
derived
by
multiplying
the
aerobic
soil
value
by
a
factor
of
two.

Input
Parameters.
The
following
values
were
used
as
inputs
for
the
Tier
2
model
PRZMEXAMS
with
the
Index
Reservoir
scenario.
These
values
were
chosen
in
accordance
with
the
Input
Parameter
Guidance,
and
are
intended
to
represent
the
combined
residues
of
parent
triadimefon
and
the
degradate
triadimenol.
Table
1.
PRZM­
EXAMS
Input
Parameters
Input
Parameter
Value
Reference/
Comment
Molecular
Weight
293.7
g/
mol
Henry's
Law
Constant
1.15E­
7
atm­
m3/
mol
CAS
#
43121433
Vapor
Pressure
7.6
x
10­
7
mm
Hg
CAS
#
43121433
Solubility
70
mg/
L
RED
#
D27523
Koc
387
MRID
#
41686102
Chemical
Application
Method
(
CAM)
1
Indicates
soil
applied,
uniform
depth,
user
defined
incorporation
depth
Incorporation
Depth
0
cm
Spray
Application
Rate,
turf
(
kg
a.
i./
ha)
3.026
(
Label)

Number
of
Applications,
turf
26
Max.
applications
allowed,
label
max
=
26
applications
(
potentially)

Application
Date,
turf
Jan
1

14
day
intervals
Best
estimate,
based
on
region
and
cropping
practices
Application
Rate,
apple
(
kg
a.
i./
ha)
0.2801
(
Label)

Number
of
Applications
3
(
Label)

Application
Date
April
1,
April
8,
April
15
Best
estimate,
based
on
region
and
cropping
practices
Application
Rate,
Xmas
trees
(
kg
a.
i./
ha)
0.2801
(
Label)

Number
of
Applications
8
(
Label)

Application
Date
May
1

14
day
intervals
Best
estimate,
based
on
region
and
cropping
practices
Application
Efficiency
0.95
0.99
Indicates
aerial
spray
(
apple,
Xmas
tree)

Indicates
ground
spray
(
turf)

Spray
Drift
Fraction
0.05
0.01
Aerial
spray
application
(
apple,
Xmas
tree)

Ground
spray
application
(
turf)

Hydrolysis
stable
MRID
41922101
Aqueous
Photolysis
Half­
life
0.32
days
MRID
42112901
&
41933601
Water
Half­
life
480
days
In
absence
of
data,
2X
aerobic
soil
metabolism
half­
life
of
240
days
 
MRID
42224104
Input
Parameter
Value
Reference/
Comment
Benthic
Half­
life
217
days
MRID
42401201
Soil
Half­
life
240
days
MRID
42224104
 
sum
of
parent
+
triadimenol,
r2
=
0.99,
p
<
0.0001
FILTRA,
UPTKF,
PLVKRT,
PLDKRT
0
Default
values
FEXTRC
0.5
Default
value
Additional
Notes
Florida
turf
scenario
modeled
for
ground
spray
FLturf
assigned
Application
Efficiency
of
0.99
and
Spray
Drift
Fraction
of
0.01
in
accordance
with
application
method
(
ground
spray)

Results.
The
following
results
(
Table
2)
were
obtained
for
the
Oregon
Christmas
tree,
Pennsylvania
apple,
and
Florida
turf
scenarios.
A
default
Percent
Cropped
Area
(
PCA)
factor
of
0.87
(
87%)
has
been
applied
to
all
the
scenarios
except
turf,
for
which
100%
of
area
is
considered
(
no
adjustment).
The
FL
turf
results
may
represent
unreasonably
high
potential
concentrations
 
the
total
number
of
applications
allowed
annually
is
undefined
on
the
label;
thus,
a
total
of
26
applications
may
conceivably
be
used
per
year,
which
is
what
was
used
in
this
assessment.
In
addition,
the
FL
turf
scenario
was
also
run
with
a
limited
number
of
applications.
As
requested
by
Bayer
CropScience
(
personal
communication),
a
total
of
three
applications
per
year
at
the
maximum
application
rate
(
3.026
kg/
ha)
with
14­
day
intervals
was
utilized
for
a
PRZM­
EXAMS
modeling
run.
This
presumably
represents
a
more
`
typical'
use
pattern
for
turf
applications.
The
results
of
this
limited
application
run
are
presented
here
simply
as
a
"
what­
if"
scenario
for
comparison
with
the
same
scenario
using
the
maximum
potential
number
of
annual
applications
(
26).
Since
there
is
no
information
on
the
label
to
indicate
a
limit
of
three
applications
per
year,
results
from
this
scenario
should
be
used
strictly
as
a
comparison
to
the
other
turf
scenario
with
26
applications.

Table
2.
Drinking
Water
Expected
Concentrations
(
raw
surface
water)
for
the
Combined
Residues
of
Triadimefon
and
Triadimenol
Chronic
Concentration
(
ppb)
Crop/
Location
Acute
Concentration
(
ppb)
1
in
10
year
annual
mean
30­
year
overall
mean
Oregon
Xmas
Trees
5.82
2.08
1.5
Pennsylvania
Apple
9.08
2.28
1.26
Florida
Turf
348.3
146.7
98.13
Florida
Turf
*
100.8
24.98
13.05
*
Limited
number
of
turf
applications
(
3)
as
per
Bayer
communiqué
of
July
25,
2005.

Ground
Water
Modeling
As
an
initial
screen,
the
concentrations
expected
in
ground
water
for
the
use
of
triadimefon
were
estimated
using
the
SCI­
GROW
model
(
Table
3).
For
the
purposes
of
ground
water
evaluation
 
specifically,
to
determine
the
likely
"
worst­
case"
situation
for
shallow
private
wells
(
and/
or
baseflow
discharge)
 
SCI­
GROW
was
run
with
the
following
input
parameters
(
and
associated
justifications),
using
the
assumption
that
fate
input
parameters
(
values
used
in
model
runs)
reflect
total
residues
(
triadimefon
+
triadimenol).
The
turf
scenario
was
run
with
26
applications
(
potential
maximum
number
according
to
label)
and
3
applications
(
representing
a
more
`
typical'
usage,
according
to
a
communiqué
from
Bayer
CropScience
on
or
about
July
25,
2005).
See
above
(
surface
water
modeling)
for
method
of
determination
and
justifications.

Input
Parameters.
The
input
parameters
for
SCI­
GROW
were
values
derived
for
total
residues
(
parent
+
degradate
of
concern)
using
MRID
#
42224104
&
41686102.

Table
3.
SCI­
GROW
Input
Parameters
Crop
Max.
Use
Rate
(
lb/
acre)
Max.
No.
of
Applications
Koc
Soil
Aerobic
Half­
life
(
days)
Expected
Concentrations
(
ppb)
Xmas
Trees
0.25
8
1.24
Apple
0.25
3
0.47
Turf
2.7
26
43.6
Turf
*
2.7
3*
387
240
5.04
*
Limited
number
of
turf
applications
as
per
Bayer
communiqué
of
July
25,
2005.

Ground
Water
Monitoring
Ground
water
monitoring
studies
supplied
by
the
registrant
indicate
maximum
concentrations
of
total
triadimefon
residues
somewhat
lower
than
predicted
by
SCI­
GROW,
but
nonetheless
of
similar
magnitude.
The
most
recent
studies
show
maximum
shallow
ground
water
concentrations
of
approximately
25
ppb
for
turf
application
in
New
Jersey
(
MRID
45544202)
and
1.67
ppb
for
turf
application
in
California
(
MRID
45544202,
45688801
&
46097201).
The
application
rate
for
both
studies
was
about
3
lb
a.
i./
acre
(
110%
of
max
single
application),
but
only
2
applications
total
were
applied,
30
days
apart
(~
6
lb/
acre
altogether).
This
may
account
for
the
lower
concentration
values
compared
to
predictions
from
the
SCIGROW
turf
scenario
using
26
applications.
However,
the
SCI­
GROW
turf
scenario
using
only
3
applications
may
underestimate
concentrations;
while
data
from
California
reveal
maximum
shallow
ground
water
concentrations
slightly
less
than
predicted
by
SCI­
GROW
(~
1.7
ppb
for
CA
vs.
5
ppb
from
SCI­
GROW),
values
obtained
from
NJ
were
substantially
higher
(
25
ppb).

ADDENDUM:
Additional
Scenarios
As
a
supplement
to
the
surface
water
scenarios
above,
additional
Florida
turf
(
golf
course)
scenarios
were
run
and
Golf
Course
Adjustment
Factors
(
GCAFs)
applied
(
Table
4).
The
GFACs
are
meant
to
elucidate
what
the
expected
surface
water
concentrations
would
be
if
only
certain
parts
of
a
golf
course
received
triadimefon
applications
at
turf
use
rates,
rather
than
100%
of
the
area
receiving
application
(
as
was
modeled
above).
This
additional
information
is
not
based
on
any
label
instructions,
nor
does
it
take
into
account
the
suitability
of
applying
GFACs
where
other
turf
uses
may
co­
occur.
These
values
are
for
purposes
of
comparison
only.
Explicit
label
changes
would
need
to
be
implemented
before
any
results
from
this
data
set
could
be
considered
applicable
to
a
genuine
risk
assessment.
Table
4.
Additional
FLturf
scenarios
with
Golf
Course
Adjustment
Factors
applied
Use
Scenario
Portion
of
golf
course
that
is
treated
Acute
(
ppb)
1
in
10
yr
annual
mean
(
ppb)
30
yr
overall
mean
(
ppb)

3
applications
14
day
interval
5.5
lbs
product
(
2
oz/
1000
ft2)
Tees/
greens
T/
G/
F
Fairways
Entire
course
4.9
33
28.1
97
1.1
7.5
6.4
22
0.75
5.1
4.35
15
3
applications
14
day
interval
2.75
lbs
product
(
1
oz/
1000
ft2)
Tees/
greens
T/
G/
F
Fairways
Entire
course
2.4
16.3
13.9
48
0.55
3.7
3.2
11
0.37
2.5
2.1
7.3
6
applications
60
day
interval
5.5
lbs
product
Tees/
greens
T/
G/
F
Fairways
Entire
course
6.9
46.6
39.7
137
2.1
14.3
12.2
42
1.6
10.9
9.3
32
6
applications
60
day
interval
2.75
lbs
product
Tees/
greens
T/
G/
F
Fairways
Entire
course
3.4
23.1
19.7
68
1.1
7.1
6.1
21
0.8
5.4
4.6
16
12
applications
30
day
interval
5.5
lbs
product
Tees/
greens
T/
G/
F
Fairways
Entire
course
11
74.8
63.8
220
3.9
26.5
22.6
78
3.1
21.1
18
62
12
applications
30
day
interval
2.75
lbs
product
Tees/
greens
T/
G/
F
Fairways
Entire
course
5.6
37.7
32.2
111
2
13.3
11.3
39
1.6
10.5
9
31
APPENDIX:
PRZM­
EXAMS
Input
and
Output
Files
Oregon
Christmas
Tree:
stored
as
ORxmas­
DW.
out
Chemical:
Triadimefon
PRZM
environment:
ORXmasTreeC.
txt
modified
Satday,
12
October
2002
at
18:
23:
10
EXAMS
environment:
ir298.
exv
modified
Thuday,
29
August
2002
at
16:
34:
12
Metfile:
w24232.
dvf
modified
Wedday,
3
July
2002
at
10:
06:
10
Water
segment
concentrations
(
ppb)

Year
Peak
96
hr
21
Day
60
Day
90
Day
Yearly
1961
2.279
2.218
2.024
1.869
1.759
0.9155
1962
2.965
2.913
2.715
2.341
2.128
1.466
1963
5.301
5.185
4.776
4.05
3.447
2.405
1964
2.954
2.887
2.712
2.591
2.478
1.885
1965
2.563
2.501
2.314
2.184
2.078
1.423
1966
2.608
2.54
2.363
2.221
2.103
1.444
1967
2.507
2.437
2.265
2.139
2.024
1.438
1968
5.669
5.53
4.987
4.236
3.829
2.078
1969
4.785
4.673
4.358
3.976
3.708
2.452
1970
2.702
2.632
2.462
2.343
2.231
1.588
1971
6.667
6.485
5.794
4.719
4.201
2.078
1972
2.916
2.842
2.683
2.598
2.528
2.009
1973
2.66
2.593
2.416
2.298
2.187
1.515
1974
2.662
2.608
2.477
2.147
2.031
1.387
1975
2.676
2.613
2.428
2.295
2.184
1.54
1976
2.584
2.523
2.331
2.189
2.08
1.233
1977
2.486
2.421
2.235
2.079
1.966
1.183
1978
2.895
2.826
2.658
2.557
2.48
1.465
1979
8.396
8.164
7.289
5.972
5.352
2.454
1980
2.944
2.874
2.708
2.61
2.501
1.901
1981
6.688
6.545
5.925
5.081
4.557
2.295
1982
2.939
2.895
2.721
2.566
2.453
1.884
1983
3.605
3.514
3.159
2.663
2.527
1.587
1984
2.802
2.73
2.568
2.484
2.39
1.693
1985
3.826
3.724
3.498
3.318
3.151
1.918
1986
2.675
2.602
2.432
2.284
2.165
1.424
1987
7.539
7.341
6.929
5.71
4.891
2.261
1988
2.944
2.896
2.708
2.507
2.408
1.888
1989
2.647
2.583
2.395
2.238
2.124
1.506
1990
2.681
2.616
2.436
2.311
2.199
1.63
Sorted
results
Prob.
Peak
96
hr
21
Day
60
Day
90
Day
Yearly
0.032258064516129
8.396
8.164
7.289
5.972
5.352
2.454
0.0645161290322581
7.539
7.341
6.929
5.71
4.891
2.452
0.0967741935483871
6.688
6.545
5.925
5.081
4.557
2.405
0.129032258064516
6.667
6.485
5.794
4.719
4.201
2.295
0.161290322580645
5.669
5.53
4.987
4.236
3.829
2.261
0.193548387096774
5.301
5.185
4.776
4.05
3.708
2.078
0.225806451612903
4.785
4.673
4.358
3.976
3.447
2.078
0.258064516129032
3.826
3.724
3.498
3.318
3.151
2.009
0.290322580645161
3.605
3.514
3.159
2.663
2.528
1.918
0.32258064516129
2.965
2.913
2.721
2.61
2.527
1.901
0.354838709677419
2.954
2.896
2.715
2.598
2.501
1.888
0.387096774193548
2.944
2.895
2.712
2.591
2.48
1.885
0.419354838709677
2.944
2.887
2.708
2.566
2.478
1.884
0.451612903225806
2.939
2.874
2.708
2.557
2.453
1.693
0.483870967741936
2.916
2.842
2.683
2.507
2.408
1.63
0.516129032258065
2.895
2.826
2.658
2.484
2.39
1.588
0.548387096774194
2.802
2.73
2.568
2.343
2.231
1.587
0.580645161290323
2.702
2.632
2.477
2.341
2.199
1.54
0.612903225806452
2.681
2.616
2.462
2.311
2.187
1.515
0.645161290322581
2.676
2.613
2.436
2.298
2.184
1.506
0.67741935483871
2.675
2.608
2.432
2.295
2.165
1.466
0.709677419354839
2.662
2.602
2.428
2.284
2.128
1.465
0.741935483870968
2.66
2.593
2.416
2.238
2.124
1.444
0.774193548387097
2.647
2.583
2.395
2.221
2.103
1.438
0.806451612903226
2.608
2.54
2.363
2.189
2.08
1.424
0.838709677419355
2.584
2.523
2.331
2.184
2.078
1.423
0.870967741935484
2.563
2.501
2.314
2.147
2.031
1.387
0.903225806451613
2.507
2.437
2.265
2.139
2.024
1.233
0.935483870967742
2.486
2.421
2.235
2.079
1.966
1.183
0.967741935483871
2.279
2.218
2.024
1.869
1.759
0.9155
0.1
6.6859
6.539
5.9119
5.0448
4.5214
2.394
Average
of
yearly
averages:
1.73151666666667
Inputs
generated
by
pe4.
pl
­
8­
August­
2003
Data
used
for
this
run:
Output
File:
ORxmas­
DW
Metfile:
w24232.
dvf
PRZM
scenario:
ORXmasTreeC.
txt
EXAMS
environment
file:
ir298.
exv
Chemical
Name:
Triadimefon
Description
Variable
Name
Value
Units
Comments
Molecular
weight
mwt
293.75
g/
mol
Henry's
Law
Const.
henry
1.15E­
7
atm­
m^
3/
mol
Vapor
Pressure
vapr
7.6E­
7
torr
Solubility
sol
70
mg/
L
Kd
Kd
mg/
L
Koc
Koc
387
mg/
L
Photolysis
half­
life
kdp
0.32
days
Half­
life
Aerobic
Aquatic
Metabolism
kbacw
480
days
Halfife
Anaerobic
Aquatic
Metabolism
kbacs
217
days
Halfife
Aerobic
Soil
Metabolism
asm
240
days
Halfife
Hydrolysis:
pH
4
0
days
Half­
life
Hydrolysis:
pH
7
0
days
Half­
life
Hydrolysis:
pH
9
0
days
Half­
life
Method:
CAM
1
integer
See
PRZM
manual
Incorporation
Depth:
DEPI
0
cm
Application
Rate:
TAPP
0.2801
kg/
ha
Application
Efficiency:
APPEFF
.95
fraction
Spray
Drift
DRFT
0.05
fraction
of
application
rate
applied
to
pond
Application
Date
Date
01­
05
dd/
mm
or
dd/
mmm
or
dd­
mm
or
dd­
mmm
Interval
1
interval
14
days
Set
to
0
or
delete
line
for
single
app.
Interval
2
interval
14
days
Set
to
0
or
delete
line
for
single
app.
Interval
3
interval
14
days
Set
to
0
or
delete
line
for
single
app.
Interval
4
interval
14
days
Set
to
0
or
delete
line
for
single
app.
Interval
5
interval
14
days
Set
to
0
or
delete
line
for
single
app.
Interval
6
interval
14
days
Set
to
0
or
delete
line
for
single
app.
Interval
7
interval
14
days
Set
to
0
or
delete
line
for
single
app.
Record
17:
FILTRA
IPSCND
1
UPTKF
Record
18:
PLVKRT
PLDKRT
FEXTRC
0.5
Flag
for
Index
Res.
Run
IR
IR
Flag
for
runoff
calc.
RUNOFF
total
none,
monthly
or
total(
average
of
entire
run)
Pennsylvania
Apple:
stored
as
PAapple­
DW.
out
Chemical:
Triadimefon
PRZM
environment:
PAappleC.
txt
modified
Satday,
12
October
2002
at
18:
24:
46
EXAMS
environment:
ir298.
exv
modified
Thuday,
29
August
2002
at
16:
34:
12
Metfile:
w14737.
dvf
modified
Wedday,
3
July
2002
at
10:
06:
12
Water
segment
concentrations
(
ppb)

Year
Peak
96
hr
21
Day
60
Day
90
Day
Yearly
1961
5.36
5.198
4.678
3.648
3.066
1.35
1962
3.254
3.155
2.782
2.205
2.137
1.214
1963
1.664
1.614
1.425
1.162
1.011
0.6719
1964
4.733
4.585
4.271
3.495
3.022
1.218
1965
1.575
1.529
1.356
1.104
0.9669
0.5083
1966
1.511
1.468
1.397
1.201
1.04
0.4724
1967
3.699
3.582
3.205
2.928
2.77
1.237
1968
10.58
10.24
9.028
8.021
7.105
2.783
1969
2.717
2.638
2.405
1.955
1.737
0.9873
1970
9.156
8.913
8.375
6.704
5.697
2.18
1971
4.088
3.969
3.592
3.02
2.586
1.258
1972
4.76
4.621
4.155
3.547
3.253
1.517
1973
4.134
4.015
3.737
3.221
2.992
1.376
1974
4.199
4.072
3.597
3.001
2.884
1.323
1975
4.322
4.195
3.994
3.361
3.07
1.304
1976
4.149
4.021
3.844
3.257
2.837
1.263
1977
3.318
3.214
2.974
2.41
2.237
1.048
1978
4.455
4.362
4.051
3.174
2.69
1.179
1979
4.106
3.991
3.558
2.783
2.469
1.17
1980
2.629
2.551
2.385
2.096
1.875
0.8042
1981
4.122
3.991
3.592
2.863
2.421
1.037
1982
3.96
3.873
3.608
3.086
2.687
1.284
1983
12.17
11.82
10.51
8.477
7.201
2.669
1984
6.022
5.885
5.437
5.159
4.776
2.023
1985
8.49
8.224
7.228
5.749
4.92
1.993
1986
14.58
14.14
12.55
9.878
8.361
3.225
1987
4.886
4.749
4.551
3.727
3.224
1.484
1988
7.49
7.255
6.361
4.799
4.044
1.63
1989
6.487
6.298
5.967
4.941
4.214
1.743
1990
5.257
5.101
4.495
3.526
3.149
1.444
Sorted
results
Prob.
Peak
96
hr
21
Day
60
Day
90
Day
Yearly
0.032258064516129
14.58
14.14
12.55
9.878
8.361
3.225
0.0645161290322581
12.17
11.82
10.51
8.477
7.201
2.783
0.0967741935483871
10.58
10.24
9.028
8.021
7.105
2.669
0.129032258064516
9.156
8.913
8.375
6.704
5.697
2.18
0.161290322580645
8.49
8.224
7.228
5.749
4.92
2.023
0.193548387096774
7.49
7.255
6.361
5.159
4.776
1.993
0.225806451612903
6.487
6.298
5.967
4.941
4.214
1.743
0.258064516129032
6.022
5.885
5.437
4.799
4.044
1.63
0.290322580645161
5.36
5.198
4.678
3.727
3.253
1.517
0.32258064516129
5.257
5.101
4.551
3.648
3.224
1.484
0.354838709677419
4.886
4.749
4.495
3.547
3.149
1.444
0.387096774193548
4.76
4.621
4.271
3.526
3.07
1.376
0.419354838709677
4.733
4.585
4.155
3.495
3.066
1.35
0.451612903225806
4.455
4.362
4.051
3.361
3.022
1.323
0.483870967741936
4.322
4.195
3.994
3.257
2.992
1.304
0.516129032258065
4.199
4.072
3.844
3.221
2.884
1.284
0.548387096774194
4.149
4.021
3.737
3.174
2.837
1.263
0.580645161290323
4.134
4.015
3.608
3.086
2.77
1.258
0.612903225806452
4.122
3.991
3.597
3.02
2.69
1.237
0.645161290322581
4.106
3.991
3.592
3.001
2.687
1.218
0.67741935483871
4.088
3.969
3.592
2.928
2.586
1.214
0.709677419354839
3.96
3.873
3.558
2.863
2.469
1.179
0.741935483870968
3.699
3.582
3.205
2.783
2.421
1.17
0.774193548387097
3.318
3.214
2.974
2.41
2.237
1.048
0.806451612903226
3.254
3.155
2.782
2.205
2.137
1.037
0.838709677419355
2.717
2.638
2.405
2.096
1.875
0.9873
0.870967741935484
2.629
2.551
2.385
1.955
1.737
0.8042
0.903225806451613
1.664
1.614
1.425
1.201
1.04
0.6719
0.935483870967742
1.575
1.529
1.397
1.162
1.011
0.5083
0.967741935483871
1.511
1.468
1.356
1.104
0.9669
0.4724
0.1
10.4376
10.1073
8.9627
7.8893
6.9642
2.6201
Average
of
yearly
averages:
1.44653666666667
Inputs
generated
by
pe4.
pl
­
8­
August­
2003
Data
used
for
this
run:
Output
File:
PAapple­
DW
Metfile:
w14737.
dvf
PRZM
scenario:
PAappleC.
txt
EXAMS
environment
file:
ir298.
exv
Chemical
Name:
Triadimefon
Description
Variable
Name
Value
Units
Comments
Molecular
weight
mwt
293.75
g/
mol
Henry's
Law
Const.
henry
1.15E­
7
atm­
m^
3/
mol
Vapor
Pressure
vapr
7.6E­
7
torr
Solubility
sol
70
mg/
L
Kd
Kd
mg/
L
Koc
Koc
387
mg/
L
Photolysis
half­
life
kdp
0.32
days
Half­
life
Aerobic
Aquatic
Metabolism
kbacw
480
days
Halfife
Anaerobic
Aquatic
Metabolism
kbacs
217
days
Halfife
Aerobic
Soil
Metabolism
asm
240
days
Halfife
Hydrolysis:
pH
4
0
days
Half­
life
Hydrolysis:
pH
7
0
days
Half­
life
Hydrolysis:
pH
9
0
days
Half­
life
Method:
CAM
1
integer
See
PRZM
manual
Incorporation
Depth:
DEPI
0
cm
Application
Rate:
TAPP
0.2801
kg/
ha
Application
Efficiency:
APPEFF
.95
fraction
Spray
Drift
DRFT
0.05
fraction
of
application
rate
applied
to
pond
Application
Date
Date
01­
04
dd/
mm
or
dd/
mmm
or
dd­
mm
or
dd­
mmm
Interval
1
interval
7
days
Set
to
0
or
delete
line
for
single
app.
Interval
2
interval
7
days
Set
to
0
or
delete
line
for
single
app.
Record
17:
FILTRA
IPSCND
1
UPTKF
Record
18:
PLVKRT
PLDKRT
FEXTRC
0.5
Flag
for
Index
Res.
Run
IR
IR
Flag
for
runoff
calc.
RUNOFF
total
none,
monthly
or
total(
average
of
entire
run)
Florida
Turf
(
maximum
number
of
applications):
stored
as
FLturf­
grndDW.
out
Chemical:
Triadimefon
PRZM
environment:
FLturfC.
txt
modified
Monday,
16
June
2003
at
15:
48:
06
EXAMS
environment:
ir298.
exv
modified
Thuday,
29
August
2002
at
16:
34:
12
Metfile:
w12834.
dvf
modified
Wedday,
3
July
2002
at
10:
04:
28
Water
segment
concentrations
(
ppb)

Year
Peak
96
hr
21
Day
60
Day
90
Day
Yearly
1961
185
179
156
124
111
51.37
1962
214
206
182
153
152
76.35
1963
301
291
256
190
161
108
1964
286
277
243
206
191
141
1965
229
221
192
149
127
66.31
1966
311
301
262
242
220
111
1967
201
195
172
133
136
75.29
1968
349
337
302
258
227
126
1969
297
288
272
235
219
110
1970
216
211
190
170
154
70.97
1971
315
303
262
199
178
122
1972
452
437
389
307
242
147
1973
219
213
191
156
134
82.55
1974
325
314
273
204
178
89.16
1975
131
127
112
88.99
74.93
54.08
1976
311
300
257
224
225
119
1977
261
253
223
181
155
110
1978
190
184
166
132
128
99.61
1979
286
276
242
196
187
144
1980
120
117
106
98.72
88.07
55.17
1981
208
200
187
152
127
82.01
1982
237
228
201
171
152
107
1983
286
278
252
170
166
115
1984
312
301
261
201
178
147
1985
101
97.37
86.69
73.97
69.15
55.67
1986
342
334
291
218
180
107
1987
131
127
110
98.11
95.85
59.13
1988
293
282
243
148
112
65.25
1989
647
623
534
394
325
179
1990
203
197
174
132
118
67.91
Sorted
results
Prob.
Peak
96
hr
21
Day
60
Day
90
Day
Yearly
0.032258064516129
647
623
534
394
325
179
0.0645161290322581
452
437
389
307
242
147
0.0967741935483871
349
337
302
258
227
147
0.129032258064516
342
334
291
242
225
144
0.161290322580645
325
314
273
235
220
141
0.193548387096774
315
303
272
224
219
126
0.225806451612903
312
301
262
218
191
122
0.258064516129032
311
301
262
206
187
119
0.290322580645161
311
300
261
204
180
115
0.32258064516129
301
291
257
201
178
111
0.354838709677419
297
288
256
199
178
110
0.387096774193548
293
282
252
196
178
110
0.419354838709677
286
278
243
190
166
108
0.451612903225806
286
277
243
181
161
107
0.483870967741936
286
276
242
171
155
107
0.516129032258065
261
253
223
170
154
99.61
0.548387096774194
237
228
201
170
152
89.16
0.580645161290323
229
221
192
156
152
82.55
0.612903225806452
219
213
191
153
136
82.01
0.645161290322581
216
211
190
152
134
76.35
0.67741935483871
214
206
187
149
128
75.29
0.709677419354839
208
200
182
148
127
70.97
0.741935483870968
203
197
174
133
127
67.91
0.774193548387097
201
195
172
132
118
66.31
0.806451612903226
190
184
166
132
112
65.25
0.838709677419355
185
179
156
124
111
59.13
0.870967741935484
131
127
112
98.72
95.85
55.67
0.903225806451613
131
127
110
98.11
88.07
55.17
0.935483870967742
120
117
106
88.99
74.93
54.08
0.967741935483871
101
97.37
86.69
73.97
69.15
51.37
0.1
348.3
336.7
300.9
256.4
226.8
146.7
Average
of
yearly
averages:
98.1276666666667
Inputs
generated
by
pe4.
pl
­
8­
August­
2003
Data
used
for
this
run:
Output
File:
FLturf­
grndDW
Metfile:
w12834.
dvf
PRZM
scenario:
FLturfC.
txt
EXAMS
environment
file:
ir298.
exv
Chemical
Name:
Triadimefon
Description
Variable
Name
Value
Units
Comments
Molecular
weight
mwt
293.75
g/
mol
Henry's
Law
Const.
henry
1.15E­
7
atm­
m^
3/
mol
Vapor
Pressure
vapr
7.6E­
7
torr
Solubility
sol
70
mg/
L
Kd
Kd
mg/
L
Koc
Koc
387
mg/
L
Photolysis
half­
life
kdp
0.32
days
Half­
life
Aerobic
Aquatic
Metabolism
kbacw
480
days
Halfife
Anaerobic
Aquatic
Metabolism
kbacs
217
days
Halfife
Aerobic
Soil
Metabolism
asm
240
days
Halfife
Hydrolysis:
pH
4
0
days
Half­
life
Hydrolysis:
pH
7
0
days
Half­
life
Hydrolysis:
pH
9
0
days
Half­
life
Method:
CAM
1
integer
See
PRZM
manual
Incorporation
Depth:
DEPI
0
cm
Application
Rate:
TAPP
3.0256
kg/
ha
Application
Efficiency:
APPEFF
.99
fraction
Spray
Drift
DRFT
.01
fraction
of
application
rate
applied
to
pond
Application
Date
Date
01­
01
dd/
mm
or
dd/
mmm
or
dd­
mm
or
dd­
mmm
Interval
1
interval
14
days
Set
to
0
or
delete
line
for
single
app.
Interval
2
interval
14
days
Set
to
0
or
delete
line
for
single
app.
Interval
3
interval
14
days
Set
to
0
or
delete
line
for
single
app.
Interval
4
interval
14
days
Set
to
0
or
delete
line
for
single
app.
Interval
5
interval
14
days
Set
to
0
or
delete
line
for
single
app.
Interval
6
interval
14
days
Set
to
0
or
delete
line
for
single
app.
Interval
7
interval
14
days
Set
to
0
or
delete
line
for
single
app.
Interval
8
interval
14
days
Set
to
0
or
delete
line
for
single
app.
Interval
9
interval
14
days
Set
to
0
or
delete
line
for
single
app.
Interval
10
interval
14
days
Set
to
0
or
delete
line
for
single
app.
Interval
11
interval
14
days
Set
to
0
or
delete
line
for
single
app.
Interval
12
interval
14
days
Set
to
0
or
delete
line
for
single
app.
Interval
13
interval
14
days
Set
to
0
or
delete
line
for
single
app.
Interval
14
interval
14
days
Set
to
0
or
delete
line
for
single
app.
Interval
15
interval
14
days
Set
to
0
or
delete
line
for
single
app.
Interval
16
interval
14
days
Set
to
0
or
delete
line
for
single
app.
Interval
17
interval
14
days
Set
to
0
or
delete
line
for
single
app.
Interval
18
interval
14
days
Set
to
0
or
delete
line
for
single
app.
Interval
19
interval
14
days
Set
to
0
or
delete
line
for
single
app.
Interval
20
interval
14
days
Set
to
0
or
delete
line
for
single
app.
Interval
21
interval
14
days
Set
to
0
or
delete
line
for
single
app.
Interval
22
interval
14
days
Set
to
0
or
delete
line
for
single
app.
Interval
23
interval
14
days
Set
to
0
or
delete
line
for
single
app.
Interval
24
interval
14
days
Set
to
0
or
delete
line
for
single
app.
Interval
25
interval
14
days
Set
to
0
or
delete
line
for
single
app.
Record
17:
FILTRA
IPSCND
1
UPTKF
Record
18:
PLVKRT
PLDKRT
FEXTRC
0.5
Flag
for
Index
Res.
Run
IR
IR
Flag
for
runoff
calc.
RUNOFF
total
none,
monthly
or
total(
average
of
entire
run)
Florida
Turf
(
limited
to
three
applications
at
14­
day
intervals):
stored
as
FLturf­
3app­
max(
DW).
out
Chemical:
Triadimefon
PRZM
environment:
FLturfC.
txt
modified
Monday,
16
June
2003
at
15:
48:
06
EXAMS
environment:
ir298.
exv
modified
Thuday,
29
August
2002
at
16:
34:
12
Metfile:
w12834.
dvf
modified
Wedday,
3
July
2002
at
10:
04:
28
Water
segment
concentrations
(
ppb)

Year
Peak
96
hr
21
Day
60
Day
90
Day
Yearly
1961
47.23
45.49
42.01
35.78
32.63
11.29
1962
80.07
77.23
67.64
52.8
43.99
16.21
1963
139
135
119
94.12
78.37
26.99
1964
94.82
91.43
79.12
64.13
55.05
20.97
1965
66.13
63.8
55.64
42.79
35.68
14
1966
252
243
210
162
137
47.38
1967
59.8
57.77
52.36
40.04
34.03
17
1968
101
98.41
86.26
75.74
68.02
25.38
1969
40.51
39.14
34.1
30.07
26.08
12.23
1970
8.205
8.029
7.349
6.094
5.349
3.17
1971
53.5
52.26
45.26
33.57
29.05
10.18
1972
76.21
74.29
66.22
49.23
46.18
18.19
1973
20.25
19.56
17.18
14.97
12.8
6.579
1974
37.81
36.5
32.23
29.29
25.96
9.796
1975
25.27
24.8
22.17
19.41
16.64
6.803
1976
61.88
59.7
52.16
39.2
32.26
13.33
1977
60.14
58
52.23
45.61
39.26
14.04
1978
31.6
30.47
26.67
22.59
21.5
9.902
1979
99.13
95.41
86.21
65.98
54.65
17.98
1980
19.08
18.52
16.9
14.64
12.78
6.273
1981
33.05
31.88
29.48
22.98
20.67
7.829
1982
94.99
91.49
80.33
69.63
60.5
21.37
1983
43.62
42.05
37.72
31.22
26.37
13.46
1984
20.04
19.34
16.69
14.09
12.53
5.859
1985
43.43
41.83
36.26
27.05
22.61
7.922
1986
66.82
64.34
57.29
49.27
41.64
14.01
1987
11.96
11.53
10.05
7.838
7.127
4.169
1988
11.33
10.94
9.523
7.687
6.569
3.504
1989
12.47
12.15
10.76
7.978
6.429
2.646
1990
9.947
9.588
8.276
7.15
6.608
3.117
Sorted
results
Prob.
Peak
96
hr
21
Day
60
Day
90
Day
Yearly
0.032258064516129
252
243
210
162
137
47.38
0.0645161290322581
139
135
119
94.12
78.37
26.99
0.0967741935483871
101
98.41
86.26
75.74
68.02
25.38
0.129032258064516
99.13
95.41
86.21
69.63
60.5
21.37
0.161290322580645
94.99
91.49
80.33
65.98
55.05
20.97
0.193548387096774
94.82
91.43
79.12
64.13
54.65
18.19
0.225806451612903
80.07
77.23
67.64
52.8
46.18
17.98
0.258064516129032
76.21
74.29
66.22
49.27
43.99
17
0.290322580645161
66.82
64.34
57.29
49.23
41.64
16.21
0.32258064516129
66.13
63.8
55.64
45.61
39.26
14.04
0.354838709677419
61.88
59.7
52.36
42.79
35.68
14.01
0.387096774193548
60.14
58
52.23
40.04
34.03
14
0.419354838709677
59.8
57.77
52.16
39.2
32.63
13.46
0.451612903225806
53.5
52.26
45.26
35.78
32.26
13.33
0.483870967741936
47.23
45.49
42.01
33.57
29.05
12.23
0.516129032258065
43.62
42.05
37.72
31.22
26.37
11.29
0.548387096774194
43.43
41.83
36.26
30.07
26.08
10.18
0.580645161290323
40.51
39.14
34.1
29.29
25.96
9.902
0.612903225806452
37.81
36.5
32.23
27.05
22.61
9.796
0.645161290322581
33.05
31.88
29.48
22.98
21.5
7.922
0.67741935483871
31.6
30.47
26.67
22.59
20.67
7.829
0.709677419354839
25.27
24.8
22.17
19.41
16.64
6.803
0.741935483870968
20.25
19.56
17.18
14.97
12.8
6.579
0.774193548387097
20.04
19.34
16.9
14.64
12.78
6.273
0.806451612903226
19.08
18.52
16.69
14.09
12.53
5.859
0.838709677419355
12.47
12.15
10.76
7.978
7.127
4.169
0.870967741935484
11.96
11.53
10.05
7.838
6.608
3.504
0.903225806451613
11.33
10.94
9.523
7.687
6.569
3.17
0.935483870967742
9.947
9.588
8.276
7.15
6.429
3.117
0.967741935483871
8.205
8.029
7.349
6.094
5.349
2.646
0.1
100.813
98.11
86.255
75.129
67.268
24.979
Average
of
yearly
averages:
13.0526333333333
Inputs
generated
by
pe4.
pl
­
8­
August­
2003
Data
used
for
this
run:
Output
File:
FLturf­
3app­
max(
DW)
Metfile:
w12834.
dvf
PRZM
scenario:
FLturfC.
txt
EXAMS
environment
file:
ir298.
exv
Chemical
Name:
Triadimefon
Description
Variable
Name
Value
Units
Comments
Molecular
weight
mwt
293.75
g/
mol
Henry's
Law
Const.
henry
1.15E­
7
atm­
m^
3/
mol
Vapor
Pressure
vapr
7.6E­
7
torr
Solubility
sol
70
mg/
L
Kd
Kd
mg/
L
Koc
Koc
387
mg/
L
Photolysis
half­
life
kdp
0.32
days
Half­
life
Aerobic
Aquatic
Metabolism
kbacw
480
days
Halfife
Anaerobic
Aquatic
Metabolism
kbacs
217
days
Halfife
Aerobic
Soil
Metabolism
asm
240
days
Halfife
Hydrolysis:
pH
4
0
days
Half­
life
Hydrolysis:
pH
7
0
days
Half­
life
Hydrolysis:
pH
9
0
days
Half­
life
Method:
CAM
1
integer
See
PRZM
manual
Incorporation
Depth:
DEPI
0
cm
Application
Rate:
TAPP
3.03
kg/
ha
Application
Efficiency:
APPEFF
.99
fraction
Spray
Drift
DRFT
.01
fraction
of
application
rate
applied
to
pond
Application
Date
Date
01­
06
dd/
mm
or
dd/
mmm
or
dd­
mm
or
dd­
mmm
Interval
1
interval
14
days
Set
to
0
or
delete
line
for
single
app.
Interval
2
interval
14
days
Set
to
0
or
delete
line
for
single
app.
Record
17:
FILTRA
IPSCND
1
UPTKF
Record
18:
PLVKRT
PLDKRT
FEXTRC
0.5
Flag
for
Index
Res.
Run
IR
IR
Flag
for
runoff
calc.
RUNOFF
total
none,
monthly
or
total(
average
of
entire
run)