Document ID: EPA-HQ-OPP-2004-0202-0014
Agency: epa
Document Type: Supporting & Related Material
Title: 
Posted Date: 2004-07-29T04:00Z

UNITED
STATES
ENVIRONMENTAL
PROTECTION
AGENCY
WASHINGTON,
D.
C.
20460
OFFICE
OF
PREVENTION,
PESTICIDES,
AND
TOXIC
SUBSTANCES
PC
Code:
056502
DP
BARCODE:
291286
MEMORANDUM
December
22,
2003
SUBJECT:
Pentachloronitrobenzene,
Revised
Drinking
Water
Assessment:
Tier
II
Drinking
Water
EDWCs
for
Use
in
the
Human
Health
Risk
Assessment.

TO:
Mohsen
Sahafeyan,
Chemist
RRB2/
HED
(
7509C)

FROM:
Cheryl
A.
Sutton,
Ph.
D.
Environmental
Scientist
ERBIV/
EFED
(
7507C)

THRU:
R.
David
Jones,
Ph.
D.,
Senior
Agronomist
ERBIV/
EFED
(
7507C)

Elizabeth
Behl,
Branch
Chief
ERBIV/
EFED
(
7507C)

This
memo
summarizes
the
Tier
II
estimated
drinking
water
concentrations
(
EDWC)
for
pentachloronitrobenzene
(
PCNB)
in
surface
water
for
use
in
the
human
health
risk
assessment.
These
estimates
account
for
contributions
from
the
degradate
pentachloroaniline
(
PCA),
as
described
in
the
initial
memo
dated
11/
12/
03
in
which
Tier
I
screening
level
EDWC's
were
presented.
The
values
presented
here
are
revised
from
those
in
the
previous
memo.
The
values
for
groundwater
presented
in
the
intial
memo
have
not
changed.
As
of
this
time,
available
monitoring
data
and
the
available
information
on
PCP
have
also
not
changed
and
you
should
refer
to
the
11/
12/
03
memo
with
regard
to
those
issues.

In
determining
revised
surface
water
EDWC's
for
the
drinking
water
assessment
EFED
utilized
the
Tier
II
screening
models
PRZM/
EXAMS.
The
EDWC's
recommended
by
EFED
for
use
in
the
human
health
risk
assessment
for
PCNB
are
presented
in
Table
1.
Reported
values
are
chosen
to
represent
the
maximum
contamination
levels
resulting
from
the
labeled
uses
(
excluding
ornamental,
greenhouse
or
residential
uses)
listed
in
the
1700+
uses
on
the
labels,
as
presented
in
EPA's
LUIS
report
for
labels
accepted
as
of
2/
20/
02
(
LUIS
Report
run
date
6/
28/
02).
The
general
fate
and
physical­
chemical
property
data
used
as
the
source
of
the
input
parameter
values
for
modeling
were
obtained
from
the
guideline
studies
and
other
submissions
from
the
registrant
and
are
presented
in
Attachment
1.
Values
used
as
input
in
modeling
are
presented
in
Table
2
along
with
the
complete
results
for
all
scenarios
modeled
for
the
drinking
water
assessment
(
surface
water
portion).
2
Table
1.
Estimated
Drinking
Water
Concentrations
for
use
in
the
PCNB
human
health
risk
assessment
based
on
use
on
cabbage
(
surface
water)
or
bulb
crops
(
groundwater).

Surface
water
drinking
water
sources
acute:
440

g/
L
(
ppb)
1
1­
in­
10­
years
(
chronic):
44.2

g/
L
(
ppb)
30­
year
average:
27.5

g/
L
(
ppb)

Groundwater
drinking
water
sources
30.6
ug/
L
(
ppb)
2
1Surface
water
EDWC
values
(
Tier
II
screening
level)
were
generated
using
the
PRZM/
EXAMS
model
with
a
ground
spray
to
cabbage
(
one
single
application
at
30
lb
a.
i./
A)
in
Florida
application
scenario.
The
actual
output
value
from
PRZM/
EXAMS
was
574.5
ppb
for
the
cabbage
use
acute
concentration.
However,
as
this
is
greater
than
the
aqueous
solubility
of
440
ppb
for
PCNB,
the
solubility
limit
should
be
used
instead.
2Groundwater
EDWC's
(
Tier
I
screening
level)
are
based
on
PCNB
use
on
bulb
crops
at
213.4
lb
a.
i./
A/
application
in
a
single
application.

Estimated
Drinking
Water
Concentrations
The
EDWC's
for
surface
water
bodies
were
determined
using
the
Tier
II
screening­
level
simulation
models
PRZM
(
v.
3.12;
input
generated
by
PE4VO1.
pl,
dated
8/
8/
03)
and
EXAMS
(
2.98.04).
Input
parameter
values
utilized
for
PRZM/
EXAMS
modeling
and
the
resultant
EDWCs
to
be
used
for
the
human
health
risk
assessment
are
presented
in
Table
2.
The
actual
PRZM/
EXAMS
output/
input
files
for
the
simulations
on
all
uses
modeled
are
presented
as
Attachment
2.
For
additional
information
on
PRZM
and
EXAMS,
see
http://
www.
epa.
gov/
oppefed1/
models/
water/.

The
five
agricultural
or
recreational
(
turf)
uses
of
PCNB
chosen
to
represent
the
use
of
the
compound
in
the
environment
are
turf,
peanuts,
cabbage
(
cole
crop),
potatoes
and
cotton.
To
simulate
these
uses,
EFED
used
a
standard
Pennsylvania
turf
scenario,
a
standard
North
Carolina
peanuts
scenario,
a
standard
Florida
cabbage
scenario,
a
standard
Idaho
potatoes
scenario,
and
a
standard
Mississippi
cotton
scenario.
Application
dates
were
chosen
based
on
whether
PCNB
is
applied
as
a
pre­
or
post­
emergent
to
the
respective
crops
as
well
as
on
reported
planting
dates
found
in
the
USDA
agricultural
crop
profiles
at
www.
pestdata.
ncsu.
edu/
cropprofiles.
Separate
simulations
were
performed
to
determine
estimated
water
concentrations
for
the
human
health
(
drinking
water
component)
risk
assessment
and
the
ecological
risk
assessment.
The
human
drinking
water
EDWCs
were
determined
using
the
standard
index
reservoir
scenario
in
which
a
172­
ha
field
drains
into
a
52000
m2
reservoir
and
percent
cropped
area
(
PCA)
is
taken
into
consideration.
The
PCA
for
each
of
the
five
crops
modeled
is
the
default
value
of
0.87.
The
surface
water
EEC's
for
the
ecological
assessments
were
determined
using
the
standard
pond
scenario
in
which
a
10­
ha
field
drains
into
a
10000
m2
pond,
with
the
assumption
that
the
small
field
is
cropped
at
100%.
Complete
PRZM
and
EXAMS
output/
input
files
can
be
found
in
Attachment
1.
Chemical
property
input
values
were
chosen
according
to
the
current
EFED
standard
guidance
document
(
Input
Parameters
in
Modeling
the
Environmental
Fate
and
Transport
of
Pesticides,
Version
II,
February
28,
2002).

The
choice
to
use
the
Pennsylvania
standard
scenario
is
based
on
the
registrant's
information
that
PCNB
is
used
on
turf
(
as
a
post­
emergent),
to
prevent
snowmold,
mainly
in
the
Great
Lakes
regions.
An
application
date
of
November
15th
was
chosen
to
represent
a
post­
emergent
application
(
generally
done
prior
to
Thanksgiving)
made
during
the
part
of
the
growing
season
in
which
snow
mold
occurs
(
November
through
April).
Incorporation
of
the
pesticide
was
not
utilized,
as
the
3
application
simulated
was
a
post­
emergent
(
foliar/
ground)
spray.

Based
on
the
pesticide
survey
usage
information,
the
crop
with
the
highest
usage
in
terms
of
its
total
U.
S.
planted
acres
treated
with
PCNB
is
the
cole
crop
brussel
sprouts.
However,
because
EFED
did
not
have
a
standard
modeling
scenario
available
for
brussel
sprouts,
cabbage
(
which
is
treated
at
the
same
rate
as
brussel
sprouts)
was
chosen
as
the
representative
cole
crop
and
the
choice
was
made
to
use
the
Florida
standard
scenario
for
cabbage.
An
application
date
of
August
15th
was
chosen
for
a
pre­
plant
application
of
PCNB
based
on
a
planting
time
of
August
to
February
in
northeast
Florida,
where
50%
of
the
state's
cabbage
acreage
is
located.
The
application
simulated
represents
a
ground
spray
with
an
incorporation
to
the
1­
inch
depth
(
EFED's
default
value).

The
choice
to
use
the
North
Carolina
peanuts
and
the
Mississippi
cotton
standard
scenarios
is
based
on
the
registrant's
information
that
PCNB
is
used
on
those
crops
predominantly
in
the
south.
An
application
date
of
April
15th
was
chosen
for
a
pre­
plant
application
to
peanuts
based
on
a
planting
time
of
April
20th
to
May
20th.
An
application
date
of
April
20th
was
chosen
for
a
pre­
plant
application
to
cotton
based
on
a
May
1st
planting
time.
The
application
simulated
for
both
crops
represents
a
ground
spray
with
an
incorporation
to
the
1­
inch
depth.

The
choice
to
use
the
standard
Idaho
potatoes
scenario
is
based
on
the
registrant's
information
that
PCNB
is
used
on
that
crop
mainly
in
the
Pacific
Northwest
and
the
Great
Lakes
regions.
An
application
date
of
May
20th
was
chosen
for
a
pre­
plant
application
to
potatoes
based
on
a
planting
time
of
April
to
June
10th
for
eastern
Idaho,
where
the
majority
of
the
crop
is
grown
in
the
state.
The
application
simulated
represents
a
granular
formulation
with
an
incorporation
to
the
1­
inch
depth.

In
addition
to
uncertainty
associated
with
modeling
inputs
(
detailed
in
the
initial
memo),
there
is
an
uncertainty
component
associated
with
limitations
of
the
Tier
II
models
(
i.
e.,
PRZM/
EXAMS).
One
particular
uncertainty
in
the
EDWC's
which
warrants
some
further
discussion
is
how
the
effects
of
solubility
have
been
handled
in
this
assessment.
In
the
environment,
solubility
places
an
upper
limit
on
the
concentration
in
solution
(
not
including
any
suspended
solid
material)
at
a
particular
temperature.
While
concentrations
higher
than
the
solubility
do
occur
(
i.
e.,
supersaturation),
they
are
highly
unlikely
in
the
environment,
given
the
large
number
of
nucleation
sites
(
soil
and
organic
matter
particles)
available
on
which
precipitation
reactions
can
start.
Due
to
the
restrictions
in
place
in
the
EXAMS
model,
it
cannot
simulate
an
aqueous
concentration
that
saturates
the
water
body
at
the
aqueous
solubility
limit
of
the
compound,
as
EXAMS
does
not
use
the
solubility
input
parameter
as
the
direct
upper
limit
on
concentration.
In
general,
the
model
disregards
a
portion
of
the
mass
of
the
compound
once
the
concentration
of
that
compounds
exceeds
a
set
limit
(
50%
of
the
solubility),
thereby
effectively
removing
some
mass
and
making
it
unavailable
from
that
point
onward
so
that
it
cannot
be
reintroduced
into
the
water
phase
even
as
the
compound
is
degraded.
This
is
done
as
a
1
Personal
communication,
Lawrence
Burns,
Office
of
Research
and
Development,
United
States
Environmental
Protection
Agency,
Athens,
GA
4
way
to
reflect
Freundlich
adsorption
behavior
in
EXAMS1.
Unfortunately,
the
removal
of
mass
from
the
system
when
one­
half
the
solubility
is
exceeded
tends
overestimate
the
removal
of
the
substance
from
the
environment.
In
addition,
it
prevents
EXAMS
from
reflecting
concentrations
in
the
environment
higher
than
one­
half
the
solubility,
even
though
they
can
physically
occur.
Consequently,
EFED's
policy
is
to
multiply
the
solubility
by
10
(
to
obtain
the
input
parameter
value)
to
prevent
EXAMS
from
using
the
solubility
dependent
routines.
While
this
does
not
change
the
results
(
i.
e.,
the
model
output
values),
it
does
allow
for
output
values
that
exceed
the
solubility
limit
(
at
the
modeled
temperature
of
25oC).
In
cases
where
the
resulting
EDWC's
are
greater
than
the
solubility,
they
are
reported
as
equivalent
to
the
solubility
limit.
It
is
thought
that
this
better
reflects
the
fate
of
the
pesticide
in
the
environment
for
the
purposes
of
the
drinking
water
and
ecological
risk
assessments.

EFED
recommends
that
the
acute
EDWC
to
be
used
in
the
human
health
risk
assessment
for
surface
water
is
440
ppb,
based
on
the
use
of
PCNB
on
cabbage
at
an
application
rate
of
30.0
lb
a.
i./
A
in
a
single
application.
Note
that
the
value
"
440
ppb"
is
the
aqueous
solubility
limit
of
the
parent
compound
at
25
oC.
EFED
recommends
that
the
chronic
EDWC
to
be
used
in
the
drinking
water
assessment
for
surface
water
is
44.2
ppb,
also
based
on
the
use
of
PCNB
on
cabbage.
While
the
use
of
PCNB
on
(
ornamental)
bulb
crops
at
an
application
rate
of
213.4
lb
a.
i./
A/
application
(
single
application)
may
result
in
higher
values,
EFED
does
not
have
a
standard
modeling
scenario
available
to
simulate
application
to
(
ornamental)
bulb
crops.
Since
the
model
results
for
cabbage
were
an
estimated
acute
concentration
which
was
equal
to
the
solubility
limit
for
the
compound,
the
predicted
acute
concentration
for
bulb
crops
could
not
be
higher
than
the
one
(
i.
e.,
440
ppb)
recommended
for
use
in
the
human
health
risk
assessment.
5
Table
2.
PRZM/
EXAMS
input
parameter
values
and
surface
water
EDWC
results
for
PCNB
plus
PCA
for
the
drinking
water
assessment.

Parameter
Value
Application
Rate
(
lb
a.
i./
A/
application)
turf:
32.67
peanuts:
10
cabbage
(
cole
crop):
30
potatoes:
25
cotton:
2.06
Number
of
Applications
turf:
2
peanuts:
1
cabbage:
1
potatoes:
1
cotton:
1
Interval
Between
Applications
(
days)
turf:
21
peanuts:
Not
Applicable
(
NA)
cabbage:
NA
potatoes:
NA
cotton:
NA
Date
of
First
Application
turf:
November
15
(
post­
emergent)
peanuts:
April
15
(
pre­
plant)
cabbage:
August
15
(
pre­
plant)
potatoes:
May
20
(
pre­
plant)
cotton:
April
20
(
pre­
plant)

Application
Type
and
Depth
of
Incorporation
(
cm)
turf:
ground
spray;
0
cm
peanuts:
ground
spray;
2.5
cm
cabbage:
ground
spray;
2.5
cm
potatoes:
granular;
2.5
cm
cotton:
ground
spray;
2.5
cm
Soil
Partition
Coefficient
(
K
d;
mL/
g)
15.5
(
MRID
41648201;
lowest
non­
sand
K
d)

Aerobic
Soil
Metabolism
Half­
life
(
days)
t
1/
2
=
1555
days
(
parent
plus
PCA)
1
(
source
data
from
MRID's
42911902,
41384501,
41713202,
42112801)

Spray
Drift
Fraction
(
ground
spray)
0.01
Application
Efficiency
0.99
Molecular
Weight
295.3
g/
mole
Vapor
Pressure
1.13
x
10­
4
Torr
Henry's
Law
Constant
4.42
x
10­
5
atm­
m3­
mol
Solubility
in
Water
at
25oC
(
ppm)
10
ppm
(
set
above
solubility
limt
of
0.44
ppm
for
modeling
purposes
based
on
model
guidance
and
limitations)

Aerobic
Aquatic
Metabolism
Half­
life
(
days)
t
1/
2
=
3110
days
(
parent
plus
PCA)
(
input
value
is
two
times
the
aerobic
soil
metabolism
half­
life
input
value)

Anaerobic
Aquatic
Metabolism
Half­
life
(
days)
t
1/
2
=
1231
days
(
parent
plus
PCA)
(
input
value
is
two
times
the
anaerobic
soil
metabolism
half­
life
value
calculated
using
source
data
from
MRID's
41384301,
41203602)

Hydrolysis
Half­
life
@
pH
7
(
days)
stable
Aquatic
Photolysis
Half­
life
@
pH
5
(
days)
1.83
6
PRZM/
EXAMS
Results
(
EDWC's
for
surface
water)
Turf:
acute:
377

g/
L
(
ppb)
1­
in­
10­
years
(
chronic):
37.9

g/
L
(
ppb)
30­
year
average:
17.5

g/
L
(
ppb)

Peanuts:
acute:
173

g/
L
(
ppb)
1­
in­
10­
years
(
chronic):
9.5

g/
L
(
ppb)
30­
year
average:
5.7

g/
L
(
ppb)

Cabbage:
acute:
440

g/
L
(
ppb)
2
1­
in­
10­
years
(
chronic):
44.2

g/
L
(
ppb)
30­
year
average:
27.5

g/
L
(
ppb)

Potatoes:
acute:
71.3

g/
L
(
ppb)
1­
in­
10­
years
(
chronic):
4.0

g/
L
(
ppb)
30­
year
average:
2.1

g/
L
(
ppb)

Cotton:
acute:
48.9

g/
L
(
ppb)
1­
in­
10­
years
(
chronic):
5.5

g/
L
(
ppb)
30­
year
average:
2.7

g/
L
(
ppb)

1The
aerobic
soil
metabolism
half­
life
value
used
in
the
models
represents
the
90th
percentile
of
the
upper
confidence
bound
on
the
mean
of
two
half­
life
values.
Half­
live
values
were
determined
from
parent
plus
PCA
data.
2The
actual
output
value
from
PRZM/
EXAMS
was
574.5
ppb
for
the
cabbage
use
acute
concentration.
However,
as
this
is
greater
than
the
aqueous
solubility
of
440
ppb
for
PCNB,
the
solubility
limit
should
be
used
instead.
7
ATTACHMENT
1:
General
fate
and
physical­
chemical
property
source
data
for
PCNB
modeling.

PARAMETER
VALUE
Chemical
Name
pentachloronitrobenzene
Molecular
Weight
295.3
Solubility
(
25
oC)
0.44
mg/
L
(
440
ppb)

Vapor
Pressure
(
25
oC)
1.13
x
10­
4
mmHg
Hydrolysis
Half­
life
(
pH
5,
7,
9;
25
oC)
stable
(
MRID's
40865301,
40972601)

Aqueous
Photolysis
Half­
life
(
pH
7)
t
1/
2
=
2.5
days
(
MRID's
42606201,
42606202)
t
1/
2
=
26.8
hours
(
MRID
42336201)

Soil
Photolysis
Half­
life
stable
(
MRID's
41004801,
41713201)

Aerobic
Soil
Metabolism
Half­
life
t
1/
2
=
77,
189
days
(
parent
only);
t
1/
2
=
489,
1012
days
(
parent
plus
PCA)
1
t
1/
2
=
983,
1052
days
(
total
residues)
2
(
MRID's
42911902,
41384501,
41713202,
42112801)

Anaerobic
Soil
Metabolism
Half­
life
t
1/
2
=
9
days,
<
30
(
DT
50;
parent
only);
t
1/
2
=
210,
410
days
(
parent
plus
PCA,
PCP)
t
1/
2
=
268,
334
days
(
total
residues)
(
MRID's
41203602,
42094401,
41384301,
41686001,
41713202,
42112802)

Organic
Carbon
Partition
Coefficient
(
K
oc)
1588,
2912,
3870,
17508
(
MRID
41648201)

Soil
Partition
Coefficient
(
K
d,
mL/
g)
7.3,
15.5,
19.1,
210
(
MRID
41648201)

1For
the
purposes
of
the
drinking
water
assessment,
half­
lives
were
recalculated
to
account
for
the
parent
plus
the
degradates
PCA
and
PCP,
when
monitored
and
detected.
2For
the
purposes
of
the
ecological
assessment,
half­
lives
were
recalculated
to
account
for
total
residues,
inclusive
of
the
parent
plus
the
degradates
PCA,
PCTA,
PCB,
PCP,
PCTASO,
PCTASO
2,
and
the
manufacturing
contaminant
HCB.
8
ATTACHMENT
2
PRZM/
EXAMS
Outputs
for
the
Drinking
Water
Assessment
1.
Cabbage
(
Standard
FL
Cabbage
Scenario)

stored
as
PCNBcab4.
out
Chemical:
PCNB
PRZM
environment:
FLcabbageC.
txt
modified
Satday,
12
October
2002
at
16:
39:
00
EXAMS
environment:
ir298.
exv
modified
Thuday,
29
August
2002
at
15:
34:
12
Metfile:
w12842.
dvf
modified
Wedday,
3
July
2002
at
09:
04:
28
Water
segment
concentrations
(
ppb)

Year
Peak
96
hr
21
Day
60
Day
90
Day
Yearly
1961
236
202
134
66.24
45.02
12.81
1962
432
374
258
178
124
34.12
1963
220
188
101
43.65
39.44
17.74
1964
493
433
304
164
116
37.91
1965
143
132
88.14
54.41
43.16
15.53
1966
120
105
65.13
40.42
31.33
12.17
1967
109
96.9
71.55
49.45
39.9
14.27
1968
336
302
206
123
97.81
29.84
1969
226
196
121
99.94
73.83
30.44
1970
202
173
138
73.5
50.9
17.55
1971
552
503
316
234
181
52.47
1972
577
503
393
201
144
42.03
1973
266
229
169
110
79.2
25.01
1974
129
117
73.26
40.22
38.39
13.79
1975
312
269
196
125
90.85
28.14
1976
378
328
203
117
82.77
26.82
1977
196
169
127
89.59
63.75
19.23
1978
89.53
78.92
48.36
35.75
30.65
13.38
1979
318
289
198
150
110
44.4
1980
196
171
132
82.02
57.92
19.87
1981
476
411
281
183
128
39.87
1982
367
321
225
159
116
38.46
1983
188
164
129
78.7
56.85
22.7
1984
277
244
177
103
73.79
22.1
1985
783
682
400
191
149
42.86
1986
175
156
110
73.91
64.07
22.91
1987
153
133
105
76.61
61.74
24.43
1988
717
626
423
298
208
60.36
1989
331
290
247
143
105
32.19
1990
78.87
70.68
44.55
25.07
21.29
10.7
Sorted
results
Prob.
Peak
96
hr
21
Day
60
Day
90
Day
Yearly
0.032258064516129
783
682
423
298
208
60.36
0.0645161290322581
717
626
400
234
181
52.47
0.0967741935483871
577
503
393
201
149
9
44.4
0.129032258064516
552
503
316
191
144
42.86
0.161290322580645
493
433
304
183
128
42.03
0.193548387096774
476
411
281
178
124
39.87
0.225806451612903
432
374
258
164
116
38.46
0.258064516129032
378
328
247
159
116
37.91
0.290322580645161
367
321
225
150
110
34.12
0.32258064516129
336
302
206
143
105
32.19
0.354838709677419
331
290
203
125
97.81
30.44
0.387096774193548
318
289
198
123
90.85
29.84
0.419354838709677
312
269
196
117
82.77
28.14
0.451612903225806
277
244
177
110
79.2
26.82
0.483870967741936
266
229
169
103
73.83
25.01
0.516129032258065
236
202
138
99.94
73.79
24.43
0.548387096774194
226
196
134
89.59
64.07
22.91
0.580645161290323
220
188
132
82.02
63.75
22.7
0.612903225806452
202
173
129
78.7
61.74
22.1
0.645161290322581
196
171
127
76.61
57.92
19.87
0.67741935483871
196
169
121
73.91
56.85
19.23
0.709677419354839
188
164
110
73.5
50.9
17.74
0.741935483870968
175
156
105
66.24
45.02
17.55
0.774193548387097
153
133
101
54.41
43.16
15.53
0.806451612903226
143
132
88.14
49.45
39.9
14.27
0.838709677419355
129
117
73.26
43.65
39.44
13.79
0.870967741935484
120
105
71.55
40.42
38.39
13.38
0.903225806451613
109
96.9
65.13
40.22
31.33
12.81
0.935483870967742
89.53
78.92
48.36
35.75
30.65
10
12.17
0.967741935483871
78.87
70.68
44.55
25.07
21.29
10.7
0.1
574.5
503
385.3
200
148.5
44.246
Average
of
yearly
averages:
27.47
Inputs
generated
by
pe4.
pl
­
8­
August­
2003
Data
used
for
this
run:
Output
File:
PCNBcab4
Metfile:
w12842.
dvf
PRZM
scenario:
FLcabbageC.
txt
EXAMS
environment
file:
ir298.
exv
Chemical
Name:
PCNB
Description
Variable
Name
Value
Units
Comments
Molecular
weightmwt
295.3
g/
mol
Henry's
Law
Const.
henry
0.000044
atm­
m^
3/
mol
Vapor
Pressure
vapr
0.000113
torr
Solubility
sol
10
mg/
L
Kd
Kd
15.5
mg/
L
Koc
Koc
mg/
L
Photolysis
half­
life
kdp
1.83
days
Half­
life
Aerobic
Aquatic
Metabolism
kbacw
3110
days
Halfife
Anaerobic
Aquatic
Metabolism
kbacs
1231
days
Halfife
Aerobic
Soil
Metabolism
asm
1555
days
Halfife
Hydrolysis:
pH
5
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
33.6
kg/
ha
Application
Efficiency:
APPEFF.
99
fraction
Spray
Drift
DRFT
.01
fraction
of
application
rate
applied
to
pond
Application
Date
Date
15­
08
dd/
mm
or
dd/
mmm
or
dd­
mm
or
dd­
mmm
Record
17:
FILTRA
IPSCND3
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)

2.
Cotton
(
Standard
Mississippi
Cotton
Scenario)

stored
as
PCNBcot3.
out
Chemical:
PCNB
PRZM
environment:
MScottonC.
txt
modified
Wedday,
22
January
2003
at
11:
52:
38
EXAMS
environment:
ir298.
exv
modified
Thuday,
29
August
2002
at
15:
34:
12
Metfile:
w03940.
dvf
modified
Wedday,
3
July
2002
at
09:
05:
46
Water
segment
concentrations
(
ppb)
11
Year
Peak
96
hr
21
Day
60
Day
90
Day
Yearly
1961
30.07
26.93
18.83
16.8
13.91
5.507
1962
11.96
10.31
6.557
3.262
2.335
1.056
1963
18.2
15.74
9.222
4.727
3.316
1.24
1964
22.17
18.38
10.14
6.317
5.873
3.327
1965
21.74
18.33
10.4
4.719
3.344
1.144
1966
23.83
21.71
13.59
9.591
6.815
2.161
1967
59.51
51.07
34.61
21.83
17.05
5.287
1968
18.97
16.66
13.19
7.872
5.52
1.818
1969
5.608
4.822
2.787
1.472
1.117
0.5061
1970
16.31
14.44
11.12
9.074
7.874
3.31
1971
59.43
50.71
37.96
21.6
15.06
4.525
1972
10.47
9.098
6.804
3.347
2.373
0.8595
1973
17.94
15.44
10.84
6.624
4.744
2.249
1974
18.2
15.27
8.391
5.154
3.854
1.727
1975
16.77
14.56
10.82
6.153
4.802
1.697
1976
42.01
36.36
28.16
18.22
15.28
5.217
1977
30.53
26.1
15.63
7.46
5.645
2.331
1978
16.26
14.23
12.33
6.585
4.737
1.649
1979
49.67
45.24
32.86
22.38
21.46
8.413
1980
35.79
31.44
21.95
14.33
10.29
3.177
1981
15.95
14.28
10.2
7.44
5.765
1.732
1982
32.92
27.86
20.41
18.04
14.19
6.088
1983
36.15
32.35
20
9.334
6.619
2.303
1984
11
9.358
5.432
3.024
2.501
1.148
1985
26.21
22.88
14.02
8.044
6.453
2.346
1986
28.64
24.61
16.66
8.872
6.552
2.062
1987
11.35
10.18
6.566
3.239
2.72
0.9285
1988
16.34
14.08
8.23
4.918
4.385
2.281
1989
23.23
20.21
14.91
10.14
7.549
2.374
1990
15.34
13.14
7.89
5.203
3.707
1.244
Sorted
results
Prob.
Peak
96
hr
21
Day
60
Day
90
Day
Yearly
0.032258064516129
59.51
51.07
37.96
22.38
21.46
8.413
0.0645161290322581
59.43
50.71
34.61
21.83
17.05
6.088
0.0967741935483871
49.67
45.24
32.86
21.6
15.28
5.507
0.129032258064516
42.01
36.36
28.16
18.22
15.06
5.287
0.161290322580645
36.15
32.35
21.95
18.04
14.19
5.217
0.193548387096774
35.79
31.44
20.41
16.8
13.91
4.525
0.225806451612903
32.92
27.86
20
14.33
10.29
3.327
0.258064516129032
30.53
26.93
18.83
10.14
7.874
3.31
0.290322580645161
30.07
26.1
16.66
9.591
7.549
3.177
12
0.32258064516129
28.64
24.61
15.63
9.334
6.815
2.374
0.354838709677419
26.21
22.88
14.91
9.074
6.619
2.346
0.387096774193548
23.83
21.71
14.02
8.872
6.552
2.331
0.419354838709677
23.23
20.21
13.59
8.044
6.453
2.303
0.451612903225806
22.17
18.38
13.19
7.872
5.873
2.281
0.483870967741936
21.74
18.33
12.33
7.46
5.765
2.249
0.516129032258065
18.97
16.66
11.12
7.44
5.645
2.161
0.548387096774194
18.2
15.74
10.84
6.624
5.52
2.062
0.580645161290323
18.2
15.44
10.82
6.585
4.802
1.818
0.612903225806452
17.94
15.27
10.4
6.317
4.744
1.732
0.645161290322581
16.77
14.56
10.2
6.153
4.737
1.727
0.67741935483871
16.34
14.44
10.14
5.203
4.385
1.697
0.709677419354839
16.31
14.28
9.222
5.154
3.854
1.649
0.741935483870968
16.26
14.23
8.391
4.918
3.707
1.244
0.774193548387097
15.95
14.08
8.23
4.727
3.344
1.24
0.806451612903226
15.34
13.14
7.89
4.719
3.316
1.148
0.838709677419355
11.96
10.31
6.804
3.347
2.72
1.144
0.870967741935484
11.35
10.18
6.566
3.262
2.501
1.056
0.903225806451613
11
9.358
6.557
3.239
2.373
0.9285
0.935483870967742
10.47
9.098
5.432
3.024
2.335
0.8595
0.967741935483871
5.608
4.822
2.787
1.472
1.117
0.5061
0.1
48.904
44.352
32.39
21.262
15.258
5.485
Average
of
yearly
averages:
2.65690333333333
Inputs
generated
by
pe4.
pl
­
8­
August­
2003
Data
used
for
this
run:
Output
File:
PCNBcot3
Metfile:
w03940.
dvf
PRZM
scenario:
MScottonC.
txt
13
EXAMS
environment
file:
ir298.
exv
Chemical
Name:
PCNB
Description
Variable
Name
Value
Units
Comments
Molecular
weightmwt
295.3
g/
mol
Henry's
Law
Const.
henry
.000044
atm­
m^
3/
mol
Vapor
Pressure
vapr
0.000113
torr
Solubility
sol
10
mg/
L
Kd
Kd
15.5
mg/
L
Koc
Koc
mg/
L
Photolysis
half­
life
kdp
1.83
days
Half­
life
Aerobic
Aquatic
Metabolism
kbacw
3110
days
Halfife
Anaerobic
Aquatic
Metabolism
kbacs
1231
days
Halfife
Aerobic
Soil
Metabolism
asm
1555
days
Halfife
Hydrolysis:
pH
7
0
days
Half­
life
Method:
CAM
1
integer
See
PRZM
manual
Incorporation
Depth:
DEPI
0
cm
Application
Rate:
TAPP
2.31
kg/
ha
Application
Efficiency:
APPEFF.
99
fraction
Spray
Drift
DRFT
.01
fraction
of
application
rate
applied
to
pond
Application
Date
Date
20­
04
dd/
mm
or
dd/
mmm
or
dd­
mm
or
dd­
mmm
Record
17:
FILTRA
IPSCND1
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)

3.
Peanuts
(
Standard
North
Carolina
Peanuts
Scenario)

stored
as
PCNBnut3.
out
Chemical:
PCNB
PRZM
environment:
NCpeanutC.
txt
modified
Satday,
12
October
2002
at
17:
12:
46
EXAMS
environment:
ir298.
exv
modified
Thuday,
29
August
2002
at
15:
34:
12
Metfile:
w13737.
dvf
modified
Wedday,
3
July
2002
at
09:
06:
30
Water
segment
concentrations
(
ppb)

Year
Peak
96
hr
21
Day
60
Day
90
Day
Yearly
1961
86.1
73.73
47.73
27.72
21.7
7.381
1962
39.36
33.76
20.58
13.79
10.99
5.255
1963
182
160
94.57
41.29
28.24
9.741
1964
95.79
80.67
52.35
25.85
18.73
6.426
1965
27.4
22.79
12.35
6.915
5.135
1.933
1966
58.21
48.49
29.31
14.05
9.954
5.724
1967
45.2
38.89
24
20.8
15.39
6.007
1968
17.14
15.44
9.119
5.446
4.497
2.982
1969
65.39
59.09
37.41
18.88
16.37
5.722
1970
40.98
36.86
26.56
14.83
13.63
4.942
1971
38.33
33.15
20.88
15.02
11.41
4.764
1972
22.93
19.26
13.27
8.462
7.116
3.617
1973
56.22
47.45
25.63
13.43
13.71
5.529
14
1974
46.51
40.7
32.25
17.48
14.3
4.874
1975
189
158
85.76
41.62
32.08
12.01
1976
29.27
24.52
15.78
7.854
8.021
3.07
1977
35.26
29.94
18.74
10.39
8.337
5.034
1978
51.18
45.41
38.09
25.57
19.94
6.55
1979
60.07
52.47
39.6
23.67
17.08
7.557
1980
86.64
73.95
41.03
22.7
16.12
6.479
1981
48.69
42.84
24.92
14.87
13.61
5.412
1982
22.48
19.22
12.44
7.844
6.195
3.342
1983
84.11
70.77
39.3
20.78
15.09
5.668
1984
252
215
138
73.19
52.94
15.3
1985
38.26
32.37
21.31
11.53
9.85
5.218
1986
36.18
30.52
17.4
9.587
6.621
2.581
1987
63.03
52.46
30.61
16.04
11.37
5.539
1988
15.98
13.65
9.375
6.136
5.314
2.657
1989
28.81
25.92
19.61
11.53
10.45
5.07
1990
38.82
33.62
20.82
11.75
9.396
4.157
Sorted
results
Prob.
Peak
96
hr
21
Day
60
Day
90
Day
Yearly
0.032258064516129
252
215
138
73.19
52.94
15.3
0.0645161290322581
189
160
94.57
41.62
32.08
12.01
0.0967741935483871
182
158
85.76
41.29
28.24
9.741
0.129032258064516
95.79
80.67
52.35
27.72
21.7
7.557
0.161290322580645
86.64
73.95
47.73
25.85
19.94
7.381
0.193548387096774
86.1
73.73
41.03
25.57
18.73
6.55
0.225806451612903
84.11
70.77
39.6
23.67
17.08
6.479
0.258064516129032
65.39
59.09
39.3
22.7
16.37
6.426
0.290322580645161
63.03
52.47
38.09
20.8
16.12
6.007
0.32258064516129
60.07
52.46
37.41
20.78
15.39
5.724
0.354838709677419
58.21
48.49
32.25
18.88
15.09
5.722
0.387096774193548
56.22
47.45
30.61
17.48
14.3
5.668
0.419354838709677
51.18
45.41
29.31
16.04
13.71
5.539
0.451612903225806
48.69
42.84
26.56
15.02
13.63
5.529
0.483870967741936
46.51
40.7
25.63
14.87
13.61
5.412
0.516129032258065
45.2
38.89
24.92
14.83
11.41
5.255
15
0.548387096774194
40.98
36.86
24
14.05
11.37
5.218
0.580645161290323
39.36
33.76
21.31
13.79
10.99
5.07
0.612903225806452
38.82
33.62
20.88
13.43
10.45
5.034
0.645161290322581
38.33
33.15
20.82
11.75
9.954
4.942
0.67741935483871
38.26
32.37
20.58
11.53
9.85
4.874
0.709677419354839
36.18
30.52
19.61
11.53
9.396
4.764
0.741935483870968
35.26
29.94
18.74
10.39
8.337
4.157
0.774193548387097
29.27
25.92
17.4
9.587
8.021
3.617
0.806451612903226
28.81
24.52
15.78
8.462
7.116
3.342
0.838709677419355
27.4
22.79
13.27
7.854
6.621
3.07
0.870967741935484
22.93
19.26
12.44
7.844
6.195
2.982
0.903225806451613
22.48
19.22
12.35
6.915
5.314
2.657
0.935483870967742
17.14
15.44
9.375
6.136
5.135
2.581
0.967741935483871
15.98
13.65
9.119
5.446
4.497
1.933
0.1
173.379
150.267
82.419
39.933
27.586
9.5226
Average
of
yearly
averages:
5.6847
Inputs
generated
by
pe4.
pl
­
8­
August­
2003
Data
used
for
this
run:
Output
File:
PCNBnut3
Metfile:
w13737.
dvf
PRZM
scenario:
NCpeanutC.
txt
EXAMS
environment
file:
ir298.
exv
Chemical
Name:
PCNB
Description
Variable
Name
Value
Units
Comments
Molecular
weightmwt
295.3
g/
mol
Henry's
Law
Const.
henry
0.000044
atm­
m^
3/
mol
Vapor
Pressure
vapr
0.000113
torr
Solubility
sol
10
mg/
L
Kd
Kd
15.5
mg/
L
Koc
Koc
mg/
L
Photolysis
half­
life
kdp
1.83
days
Half­
life
Aerobic
Aquatic
Metabolism
kbacw
3110
days
Halfife
Anaerobic
Aquatic
Metabolism
kbacs
1231
days
Halfife
Aerobic
Soil
Metabolism
asm
1555
days
Halfife
Hydrolysis:
pH
7
0
days
Half­
life
16
Method:
CAM
4
integer
See
PRZM
manual
Incorporation
Depth:
DEPI
2.5
cm
Application
Rate:
TAPP
11.2
kg/
ha
Application
Efficiency:
APPEFF.
99
fraction
Spray
Drift
DRFT
.01
fraction
of
application
rate
applied
to
pond
Application
Date
Date
15­
04
dd/
mm
or
dd/
mmm
or
dd­
mm
or
dd­
mmm
Record
17:
FILTRA
IPSCND1
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)

4.
Potatoes
(
Standard
Idaho
Potatoes
Scenario)

stored
as
PCNBpot3.
out
Chemical:
PCNB
PRZM
environment:
IDpotatoC.
txt
modified
Satday,
12
October
2002
at
17:
00:
44
EXAMS
environment:
ir298.
exv
modified
Thuday,
29
August
2002
at
15:
34:
12
Metfile:
w24156.
dvf
modified
Wedday,
3
July
2002
at
09:
04:
38
Water
segment
concentrations
(
ppb)

Year
Peak
96
hr
21
Day
60
Day
90
Day
Yearly
1961
21.63
18.58
10.65
7.249
5.211
1.326
1962
7.096
6.102
3.543
2.233
1.791
0.8802
1963
15.65
13.57
9.236
5.238
4.179
2.02
1964
14.88
13.74
8.018
3.519
3.636
1.772
1965
14.62
13.31
12.92
12.22
9.655
3.634
1966
1.184
1.184
1.182
1.172
0.9505
0.2965
1967
18.9
16.98
10.89
5.117
3.608
1.05
1968
16.2
14.84
10.53
4.948
3.908
1.548
1969
19.9
17.23
10.13
4.53
3.094
1.472
1970
143
125
76.43
38.09
26.25
7.296
1971
27.42
23.87
14.95
8.472
6.881
3.272
1972
24.13
21.21
13.06
8.675
6.952
2.993
1973
11.76
10.23
6.067
4.532
4.109
1.615
1974
79.15
67.14
37.2
16.11
11.13
3.972
1975
18.36
15.7
9.065
4.624
3.481
1.35
1976
32.8
29.16
18.69
9.049
6.485
2.45
1977
3.621
3.121
1.814
1.627
1.32
0.5893
1978
7.24
6.176
4.395
3.04
2.032
0.7655
1979
9.554
9.49
9.01
5.802
4.859
1.384
1980
40.05
35.4
24.6
13.64
9.362
4.584
1981
74.77
64.34
36.75
15.77
10.77
3.809
1982
18.23
18.1
16.06
8.784
7.054
3.047
1983
15.19
13.33
9.777
5.859
4.755
2.993
1984
18.56
17.03
11.1
9.007
8.584
3.546
1985
19.44
16.58
9.469
4.499
3.155
1.109
1986
15.25
13.36
10.56
6.068
4.501
1.281
1987
6.751
5.805
3.335
1.57
1.081
0.3301
17
1988
8.362
7.128
4.956
3.481
2.322
0.743
1989
13.41
11.55
7.84
5.188
4.555
1.376
1990
15.01
13.23
7.992
3.841
2.989
1.302
Sorted
results
Prob.
Peak
96
hr
21
Day
60
Day
90
Day
Yearly
0.032258064516129
143
125
76.43
38.09
26.25
7.296
0.0645161290322581
79.15
67.14
37.2
16.11
11.13
4.584
0.0967741935483871
74.77
64.34
36.75
15.77
10.77
3.972
0.129032258064516
40.05
35.4
24.6
13.64
9.655
3.809
0.161290322580645
32.8
29.16
18.69
12.22
9.362
3.634
0.193548387096774
27.42
23.87
16.06
9.049
8.584
3.546
0.225806451612903
24.13
21.21
14.95
9.007
7.054
3.272
0.258064516129032
21.63
18.58
13.06
8.784
6.952
3.047
0.290322580645161
19.9
18.1
12.92
8.675
6.881
2.993
0.32258064516129
19.44
17.23
11.1
8.472
6.485
2.993
0.354838709677419
18.9
17.03
10.89
7.249
5.211
2.45
0.387096774193548
18.56
16.98
10.65
6.068
4.859
2.02
0.419354838709677
18.36
16.58
10.56
5.859
4.755
1.772
0.451612903225806
18.23
15.7
10.53
5.802
4.555
1.615
0.483870967741936
16.2
14.84
10.13
5.238
4.501
1.548
0.516129032258065
15.65
13.74
9.777
5.188
4.179
1.472
0.548387096774194
15.25
13.57
9.469
5.117
4.109
1.384
0.580645161290323
15.19
13.36
9.236
4.948
3.908
1.376
0.612903225806452
15.01
13.33
9.065
4.624
3.636
1.35
0.645161290322581
14.88
13.31
9.01
4.532
3.608
1.326
0.67741935483871
14.62
13.23
8.018
4.53
3.481
1.302
0.709677419354839
13.41
11.55
7.992
4.499
3.155
1.281
0.741935483870968
11.76
10.23
7.84
3.841
3.094
1.109
18
0.774193548387097
9.554
9.49
6.067
3.519
2.989
1.05
0.806451612903226
8.362
7.128
4.956
3.481
2.322
0.8802
0.838709677419355
7.24
6.176
4.395
3.04
2.032
0.7655
0.870967741935484
7.096
6.102
3.543
2.233
1.791
0.743
0.903225806451613
6.751
5.805
3.335
1.627
1.32
0.5893
0.935483870967742
3.621
3.121
1.814
1.57
1.081
0.3301
0.967741935483871
1.184
1.184
1.182
1.172
0.9505
0.2965
0.1
71.298
61.446
35.535
15.557
10.6585
3.9557
Average
of
yearly
averages:
2.12685333333333
Inputs
generated
by
pe4.
pl
­
8­
August­
2003
Data
used
for
this
run:
Output
File:
PCNBpot3
Metfile:
w24156.
dvf
PRZM
scenario:
IDpotatoC.
txt
EXAMS
environment
file:
ir298.
exv
Chemical
Name:
PCNB
Description
Variable
Name
Value
Units
Comments
Molecular
weightmwt
295.3
g/
mol
Henry's
Law
Const.
henry
.000044
atm­
m^
3/
mol
Vapor
Pressure
vapr
0.000113
torr
Solubility
sol
10
mg/
L
Kd
Kd
15.5
mg/
L
Koc
Koc
mg/
L
Photolysis
half­
life
kdp
1.83
days
Half­
life
Aerobic
Aquatic
Metabolism
kbacw
3110
days
Halfife
Anaerobic
Aquatic
Metabolism
kbacs
1231
days
Halfife
Aerobic
Soil
Metabolism
asm
1555
days
Halfife
Hydrolysis:
pH
7
0
days
Half­
life
Method:
CAM
4
integer
See
PRZM
manual
Incorporation
Depth:
DEPI
2.5
cm
Application
Rate:
TAPP
28
kg/
ha
Application
Efficiency:
APPEFF.
99
fraction
Spray
Drift
DRFT
.00
fraction
of
application
rate
applied
to
pond
Application
Date
Date
20­
05
dd/
mm
or
dd/
mmm
or
dd­
mm
or
dd­
mmm
Record
17:
FILTRA
IPSCND1
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)
19
5.
Turfgrass
(
Standard
Pennsylvania
Turfgrass
Scenario)

stored
as
PCNBtur3.
out
Chemical:
PCNB
PRZM
environment:
PAturfC.
txt
modified
Satday,
12
October
2002
at
17:
27:
02
EXAMS
environment:
ir298.
exv
modified
Thuday,
29
August
2002
at
15:
34:
12
Metfile:
w14737.
dvf
modified
Wedday,
3
July
2002
at
09:
06:
12
Water
segment
concentrations
(
ppb)

Year
Peak
96
hr
21
Day
60
Day
90
Day
Yearly
1961
93.75
92.73
79.83
46.1
30.73
7.577
1962
109
108
104
96.09
75.75
21.78
1963
66.03
65.27
62.3
29.28
19.88
8.478
1964
93.42
92.45
89.16
80.89
64.33
21.28
1965
72.37
71.79
69.32
53.58
44.18
12.89
1966
32.02
31.72
29.77
17.31
13.93
6.722
1967
101
88.34
54.63
33.62
28.07
11.92
1968
46.04
39.8
37.73
25.02
20.55
9.967
1969
155
153
146
56.96
38.07
16.16
1970
137
135
130
124
98.13
28.98
1971
75.64
65.84
52.68
33.56
27.74
11.69
1972
54.2
47.36
36.06
21.18
14.2
7.144
1973
155
135
109
44.72
29.99
11.7
1974
359
311
191
73.56
53.4
26.22
1975
72.44
71.95
70.4
50.97
36.16
10.87
1976
207
205
195
83.37
55.89
17.55
1977
180
179
172
159
124
38.35
1978
123
114
110
107
85.32
27.01
1979
73.51
72.82
70.11
61.61
49.56
14.41
1980
60.47
51.92
44.77
29.02
19.44
5.662
1981
41.43
41.05
39.56
28.58
20.12
6.999
1982
57.78
57.23
55.1
52.26
40.45
11.94
1983
379
375
351
159
106
27.35
1984
356
353
339
235
164
43.59
1985
574
498
310
191
128
33.37
1986
188
186
181
176
138
40.03
1987
33.68
30.49
29.65
28.04
22.97
7.879
1988
384
332
219
136
90.5
23.8
1989
158
138
83.65
44.98
33.84
10.98
1990
27.1
23.62
15.26
8.598
5.815
2.961
Sorted
results
Prob.
Peak
96
hr
21
Day
60
Day
90
Day
Yearly
0.032258064516129
574
498
351
235
164
43.59
0.0645161290322581
384
375
339
191
138
40.03
0.0967741935483871
379
353
310
176
128
38.35
0.129032258064516
359
332
219
159
124
33.37
0.161290322580645
356
311
195
159
106
20
28.98
0.193548387096774
207
205
191
136
98.13
27.35
0.225806451612903
188
186
181
124
90.5
27.01
0.258064516129032
180
179
172
107
85.32
26.22
0.290322580645161
158
153
146
96.09
75.75
23.8
0.32258064516129
155
138
130
83.37
64.33
21.78
0.354838709677419
155
135
110
80.89
55.89
21.28
0.387096774193548
137
135
109
73.56
53.4
17.55
0.419354838709677
123
114
104
61.61
49.56
16.16
0.451612903225806
109
108
89.16
56.96
44.18
14.41
0.483870967741936
101
92.73
83.65
53.58
40.45
12.89
0.516129032258065
93.75
92.45
79.83
52.26
38.07
11.94
0.548387096774194
93.42
88.34
70.4
50.97
36.16
11.92
0.580645161290323
75.64
72.82
70.11
46.1
33.84
11.7
0.612903225806452
73.51
71.95
69.32
44.98
30.73
11.69
0.645161290322581
72.44
71.79
62.3
44.72
29.99
10.98
0.67741935483871
72.37
65.84
55.1
33.62
28.07
10.87
0.709677419354839
66.03
65.27
54.63
33.56
27.74
9.967
0.741935483870968
60.47
57.23
52.68
29.28
22.97
8.478
0.774193548387097
57.78
51.92
44.77
29.02
20.55
7.879
0.806451612903226
54.2
47.36
39.56
28.58
20.12
7.577
0.838709677419355
46.04
41.05
37.73
28.04
19.88
7.144
0.870967741935484
41.43
39.8
36.06
25.02
19.44
6.999
0.903225806451613
33.68
31.72
29.77
21.18
14.2
6.722
0.935483870967742
32.02
30.49
29.65
17.31
13.93
5.662
0.967741935483871
27.1
23.62
15.26
8.598
5.815
2.961
21
0.1
377
350.9
300.9
174.3
127.6
37.852
Average
of
yearly
averages:
17.5086333333333
Inputs
generated
by
pe4.
pl
­
8­
August­
2003
Data
used
for
this
run:
Output
File:
PCNBtur3
Metfile:
w14737.
dvf
PRZM
scenario:
PAturfC.
txt
EXAMS
environment
file:
ir298.
exv
Chemical
Name:
PCNB
Description
Variable
Name
Value
Units
Comments
Molecular
weightmwt
295.3
g/
mol
Henry's
Law
Const.
henry
.000044
atm­
m^
3/
mol
Vapor
Pressure
vapr
0.000113
torr
Solubility
sol
10
mg/
L
Kd
Kd
15.5
mg/
L
Koc
Koc
mg/
L
Photolysis
half­
life
kdp
1.83
days
Half­
life
Aerobic
Aquatic
Metabolism
kbacw
3110
days
Halfife
Anaerobic
Aquatic
Metabolism
kbacs
1231
days
Halfife
Aerobic
Soil
Metabolism
asm
1555
days
Halfife
Hydrolysis:
pH
5
0
days
Half­
life
Hydrolysis:
pH
7
0
days
Half­
life
Hydrolysis:
pH
9
0
days
Half­
life
Method:
CAM
2
integer
See
PRZM
manual
Incorporation
Depth:
DEPI
0
cm
Application
Rate:
TAPP
36.6
kg/
ha
Application
Efficiency:
APPEFF.
99
fraction
Spray
Drift
DRFT
.01
fraction
of
application
rate
applied
to
pond
Application
Date
Date
15­
11
dd/
mm
or
dd/
mmm
or
dd­
mm
or
dd­
mmm
Interval
1
interval
21
days
Set
to
0
or
delete
line
for
single
app.
Record
17:
FILTRA
IPSCND3
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)