UNITED STATES ENVIRONMENTAL PROTECTION AGENCY

WASHINGTON D.C., 20460

OFFICE  OF 

PREVENTION, PESTICIDES AND 

TOXIC SUBSTANCES

		

							PC # 046679

							DP Barcode: D352807

Date:  October 9, 2008

MEMORANDUM

SUBJECT:	Fenamidone (Reason 500SC Fungicide; 44.4% fenamidone; EPA Reg.
No.264-695)

						CAS Name:
(5S)-3,5-dihydro-5-methyl-2-(methylthio)-5-phenyl-3-(phenylamino)-4H-imi
dazol-4-one

			CAS Reg. No.: 161326-34-7

			Interregional Research Project No. 4 (PR # 07975, 08164)

Drinking Water Assessment for Total Residues in Surface and Water for
Uses on Root vegetables (except sugar beets ; Subgroup 1B, except
radishes), okra, turnip greens, cilantro, and grapes East of the Rockies

	

	FROM:	James A. Hetrick, Ph.D, Senior Scientist

			Silvia C. Termes, Ph.D., Chemist

			Mark Corbin, Acting Branch Chief 

Ecological Risk Branch III

			Environmental Fate and Effects Division (7507P)

TO:		Dana Vogel, Chief

			Registration Action Branch 1

Health and Effects (7509P)

Barbara Madden

			Minor Use Branch

Registration Division (7509P)

The Interregional Research Project No. 4 has petitioned (Petition Number
7E7350) for uses of fenamidone on root vegetables, except sugar beet;
Subgroup 1B, (except radish, turnip leaves (turnip greens), okra,
coriander leaves (cilantro) and grapes (East of the Rockies).  The
petitioner proposed to use a previous drinking water assessment
(D332878, D316085, D316083, D339503 ; 05/14/07) to support the proposed
 petition.  Their rationale is summarized in Table I.  

Table I   New uses petitioned under IR-4 Petition Number 7E7350 and
their rationale for using previously assessed agricultural commodities.
(Source: IR-4 Petition) 

Petitioned Use	Existing Use Surrogate (bold), as per Petitioner and
Rationale fro Using these Surrogates	Previously Modeled Commodities and
Scenarios

Root vegetables, except sugar beet

Subgroup 1B, except radish	Root Vegetables:

Carrot (tolerance has been established for carrots). Control Phytium
species causing cavity spot

Petitioner’s rationale:  Radishes are not included due to their very
short growing. Other root vegetables take considerable time to grow and
thus, are more prone to fungi infestation. Similar  Phytium species
attack other root vegetable	Carrot

FL: Western Palm Beach County

Riviera sand



Okra 	Fruiting Vegetable

Peppers,

Petitioner’s rationale: Okra: A tolerance has been established for
non-bell peppers and okra is more similar to bell peppers that other
peppers

	Peppers

FL: Collier County

Turnip greens	Brassica Vegetables

Petitioner’s rationale Control of downy mildew, Cercospo4ra leafspot,
white rust. Tolerance established for Brassica, leafy greens

	Cilantro leaves (coriander)	Leafy vegetables

Petitioner’s Rationale;  Tolerances have been established to
non-Brassica leafy vegetables, parsley included. Parsley is considered
the same as cilantro	Lettuce

FL: Western Palm Beach County

Riviera sand

CA:

Grapes East of the Rockies	Requested by the states of Michigan and
Oklahoma to control downy mildew caused by Plasmopara viticola.
Tolerance being petitioned using two trials conducted East of the Rocky
Mountains and European trials	None



EFED notes the previous  drinking water assessment is based on
fenamidone use on leafy vegetables, Brassica leafy vegetables, fruiting
vegetables, carrots, cotton, tobacco, sunflower seeds, and in-furrow
application at planting of cotton seeds. The assessment was conducted
using a maximum single application rate of 0.267 lbs ai/A applied 3
times at an interval of 5 days.  Applications were modeled using both
aerial and ground spray.  Similar application rates, application
intervals, and application techniques are proposed for all crops except
grapes in this petition.  The proposed use of fenamidone on grapes,
however, recommends a 10 to 14 day application interval instead of a 5
day application interval.  Additionally, agronomic practices in grape
production are not adequately represented by the crops in the previous
drinking water assessment.  Therefore, the only crop considered in this
DWA is grapes.  The estimated drinking water concentrations (EDWC) from
the previous DWA (D332878, D316085, D316083, D339503 ; 05/14/07)    can
be used to support the IR4 petition.

μg/L for the 1 in 10 year daily peak concentration, 12.86 μg/L for the
1 in 10 year annual average concentration, and 6.89 μg/L for the 30
year annual average concentration.  The maximum concentration of total
fenamidone residues in shallow groundwater are not expected to exceed
176 μg/L.  A compilation of EDWCs for total fenamidone residues is
shown in Tables VII and VIII. 

Use Information

The fenamidone use information for the IR4 petition was taken from the
Reason 500 SC Fungicide label (Table II).

Table II. Use Input Parameters for Petitioned New Uses Under IR-4 based
on previously assessed agricultural commodities

Use	Max. Single App. Rate 

(lbs a.i./A)	# of App. /

Season	Seasonal Max. Rate (lbs a.i./A)	Minimum App. Interval (days)
Preharvest App. Interval

(days)

Root Vegetables	0.267	

3

	0.80	5	2

Turnip Greens

Brassica Leafy Vegetables

	0.267	

3

	0.80	5	2

Okra

Fruiting Vegetables

	0.267	3	0.80	5	14

Cilantro

Leafy Vegetables (Except Brassica) 

	0.267	3	0.80	5	2

Grapes

East of the Rocky Mountains	0.268	3	0.80	10-14	30



Previous Drinking Water Assessments

Drinking water exposure assessment for fenamidone have been conducted
for use on lettuce (7/15/02); tomatoes, potatoes, and sweet potatoes
(D294195 & 292900, 1/28/04); and leafy vegetables, Brassica leafy
vegetables, fruiting vegetables, carrots, cotton, tobacco, sunflower
seeds, and in-furrow application at planting of cotton seeds (5/10/07 &
5/14/07).  Earlier DWAs were conducted for fenamidone and the
degradation product (RPA 412636).  More recent  DWAs were conducted to
account for all fenamidone degradation products (RPA-412636, RPA-412108,
RPA-411639, RPA-413255, RPA-409446, RP- 410995), at the request of the
Metabolite Assessment Committee (MARC; 05/25/04).  The drinking water
assessment including fenamidone and total residues was complete on May
14, 2007 (DP Barcodes D332878, D316085, D316083, D339503).  

Exposure Modeling 

The EDWCs were calculated using a Tier II model for surface water PRZM
(Version   3.122) and EXAMS (Version 2.98.04) using the PE5 platform.
The EDWC in ground water water were estimated using SCI-GROW (Version
2.3).

The appropriate input parameters were selected from the
physical/chemical properties and environmental fate data submitted by
the petitioner to support registration of fenamidone.  Input parameters
were selected in accordance with US EPA-OPP EFED water model parameter
selection guidelines, Guidance for Selecting Input Parameters in
Modeling the Environmental Fate and Transport of Pesticides, Version II,
February 28, 2002.   Expanded information about the models, selection of
input parameters and scenarios can be obtained from,     HYPERLINK
"http://www.epa.gov/oppefed1/models/water/index.htm" 
http://www.epa.gov/oppefed1/models/water/index.htm 

Environmental Fate of Fenamidone and Chemical Species Included in the
Assessment (Total Residues)

Summary of the Environmental Fate of Fenamidone

Aerobic metabolism is the major route of degradation for fenamidone in
the environment, However, it can undergo direct photolysis in water; a
process that would only be significant in clear, shallow waters. 
Fenamidone has a moderate sorption affinity to soils. 

The major terminal degradate of fenamidone is
S-methyl-5-phenylimidazolidine-2,4-dione (RPA-412636; CAS Reg. No.
27539-12-4).  It is a persistent degradate that has the potential to
accumulate in soils.  It does not bind strongly to soil and has a high
potential to leach to ground water or reach surface water by runoff. 

Chemical Species Included in the Assessment

The drinking water exposure assessment for total fenamidone residues is
based on modeling (Tier II PRZM and EXAMS).  Modeling for degradation
products was not conducted due to lack of laboratory environmental fate
data.  Monitoring data are not available yet for fenamidone and its
transformation products to assess total fenamidone residue
concentrations in surface and ground source waters.  Because the
modeling approach requires use of the cumulative residue degradation
half-lives as well as the lowest soil-:water partitioning coefficient
for fenamidone, the estimated concentration in drinking water are
expected to be conservative. Thus, the DWA assessments are based on
total residues.

Kinetics of Transformation Products

The modeling of total fenamidone residues required recalculation of
cumulative fenamidone residue half-lives from laboratory transformation
studies.  Recalculation of half-lives was conducted using the summed
concentration (expressed as % of parent) for parent fenamidone and its
transformation products (RPA-412636, RPA-412108, RPA-411639, RPA-413255,
RPA-409446, RP- 410995; Identification of these chemical species is
included in Attachment I).  An evaluation of the abiotic and biotic
transformation laboratory studies was conducted to assess the half-lives
of total fenamidone residues.  This evaluation indicates the fenamidone
transformation products were formed only (and very slowly) in aerobic
soil (MRID 45385819)( Figure 1).  Total fenamidone residue is considered
to be stable in aerobic soil because the slope of regression of total
residues as function of is not significantly different than zero
(p=0.955) (Figure 2).   Because the fenamidone was the only identifiable
residue in other laboratory degradation studies, it was used to derive
total residue half-lives for hydrolysis, photodegradation in water, and
aerobic aquatic metabolism.

Figure 1: Degradation Patterns of Fenamidone Degradation Products in
Aerobic Soil Metabolism Study (MRID 45385819)

 

Figure 2: Degradation Pattern of Total Fenamidone Residues in Aerobic
Soil Metabolism Study (MRID 45385819)

Mobility 

The mobility of total fenamidone residues is be based on the compound
with the lowest soil-:water partitioning coefficient.   This approach
was used to provide a conservative assessment of mobility for the
fenamidone residues.   Batch equilibrium partition coefficients of
fenamidone and its degradation products are shown in Table III  The
batch equilibrium partition coefficient for RPA-412636 was used to
represent mobility of total fenamidone residues.

Table III: Batch Equilibrium Coefficients for Fenamidone and Its
Degradation Products

Company Code	Average Koc	Data Source

Fenamidone	368	MRID 45385823

RPA-412636	26	MRID 45385824

RPA-412108	31	MRID  45385825

RPA-411639

	611	MRID 45385826

RPA-413255

	458

	MRID 45385827

RPA-409446	No Data

RP- 410995	No Data





Estimation of Exposure Concentrations 

Input parameters

Use Input Parameters

Information provided in Reason 500 SC Fungicide for the surrogate
agricultural commodities and grapes (East of the Rocky Mountains) were
used to establish pesticide use data for PRZM-EXAMS and SCI-GROW
simulations (Table II). 

Scenarios

Surface Water (PRZM-EXAMS)

For each of the proposed agricultural commodities, EFED considered
potential sites where fenamidone might be used. For leafy vegetables,
more than one scenario was chosen to help identify areas where
fenamidone use may have a higher impact on drinking water drawn from
surface water.  Surrogate scenarios were used when scenarios were not
available for a specific use.  Scenarios used to run PRZM and EXAMS for
the proposed new uses are shown in Table IV.  A default Percent Crop
Area (PCA) of 0.87 was used to correct the drinking water
concentrations.  The default PCA was selected because fenamidone could
be used on multiple crops in the same watershed. 

Table IV Scenarios Used in PRZM and  EXAMS

Agricultural Commodity	Crop Scenario	Met File	Scenario Characterization

Root Vegetables

Carrot	Carrot

FL: Western Palm Beach County

Riviera sand

CA:	W12844.dvf	Represent leafy vegetables based on geographic location
and climate of major growing area



Brassica (Leaves) 

Turnip greens	CA:Santa Maria Valley

FL:Collier County	W23234.dvf

W12842.dvf	Standard EFED scenario

Tobacco	NC:Johnston County	W133722.dvf	Standard EFED scenario

Peppers	FL: Collier County	W12842.dvf	Standard EFED scenario

Fruiting Vegetables

Okra

	Tomatoes

CA: Central Valley

FL: Manattee County

PA: Adams County

Peppers

FL: Collier County	W93193.dvf

W12844.dvf

W14737.dvf

W12842.dvf	Standard EFED scenario

Non-Brassica Leaf Vegetables

Cilantro	Non-Brassica Leal Vegetables

Lettuce

FL: Western Palm Beach County

Riviera sand

CA:

	W12844.dvf	Represent leafy vegetables based on geographic location and
climate of major growing area



Grapes

East of the Rocky Mountains	New York

Chautaqua County	W14860.dvf	Standard EFED scenario



Surface Water

The environmental fate and physical-chemical input parameters  for
PRZM/EXAMS simulations are shown in Table V. 

Table V.  PRZM/EXAMS Input Parameters for Total Fenamidone Residues in
Surface Water

Model Parameter	Value	Reference

Molecular Weight (g/moles)	311.4	Calculated

Henry’s Law Constant (atm-m3/mol)	1.37E-10	Estimated

Vapor Pressure (torr)	2.6E-9	Product Chemistry Data

Solubility (mg/L)	7.8	Product Chemistry Data

Koc (L/mg-OC)	26	MRID 45385824

Photolysis Half-life (days)	5.4	MRID 45385830, 45385831

Hydrolysis @ pH 7 (days)	407	MRID  45385829

Aerobic Soil Half-life (days)	Stable	MRID 45385819

Aerobic Aquatic  Half-life (days)	137.78	MRID 45385821/45385822

Anaerobic Aquatic Half-life (days)	1386.29	MRID 4540003



Ground Water (SCI-GROW)

The environmental fate input parameters for SCI-GROW are shown Table VI.

Table VI.  SCI-GROW Input Parameters for Total Fenamidone

Model Parameter	Value	Reference

Koc (L/mg-OC)	26	MRID 45385824

Aerobic Soil Half-life (days)	1000 days1	MRID 45385819

1- Because the SCI-GROW model requires an input value, a half-life of
1000 days was used as a surrogate half-life for total fenamidone
residues.

Exposure Concentrations of Fenamindone and Total Residues in Drinking
Water

Surface Water

Table VII shows EDWCs of fenamidone and total residues in surface source
water.  EDWCs for carrots, sugarbeets, cole crops, peppers, tomatoes,
cotton seed treatment, and sunflower treatment were taken from a
previous DWA (D332878, D316085, D316083, D339503 ; 05/14/07).      

Table VII.  Non-PCA and PCA (in parenthesis) Corrected Estimated
Exposure Concentrations of Total Residues Drawn from Surface Water. 
Concentrations are in μg/L (ppb)

Agricultural Commodity

(Type of spray application and application interval)	1-in-10 yr Peak
1-in-10 yr Annual Mean	30 year Annual Mean 

Grapes– CA 

Aerial 10-day interval

Ground 10-day interval	

16.48 (14.34)

14.12 (12.82)	

6.09 (5.30)

5.10 (4.44 )	

3.90 (3.39)

2.86 (2.49)



Carrot – Florida 1

Aerial 5-day interval

Ground 5-day interval

	

32.54 (28.31)

32.63 (28.39)

	

4.46(3.88)

4.23(3.68)

	

2.10 (1.83)

1.77(1.54)



Sugarbeet – California 1

Aerial 5-day interval

Ground 5-day interval

	

11.66 (10.14)

11.76 (10.23)

	

4.55(3.96)

3.88(3.38)

	

3.57(3.11)

2.63(3.72)



Sugarbeet – Minnesota1

Aerial 5-day interval

Ground 5-day interval

	

22.11(19.24)

19.47(16.94)

	

8.56(7.45)

7.51(6.53)

	

6.14(5.34)

4.30(3.74)



Cole Crops – California 1

Aerial 5-day interval

Ground  5-day interval	

29. 86 (25.98)

28.20 ( 24.53)	

10.43 (9.07)

9.72 (8.45)	

6.54 (5.69)

5.67 (4.93)

Cabbage Crops – FL 

Aerial 5-day interval

Ground 5-day interval	

25.71 (22.37)

24.11 (20.98)	

4.53 (3.94)

4.10 ( 3.57)	

2.42 (2.10)

1.90 (1.65

Lettuce – CA 

Aerial 5-day interval

Ground 5-day interval	

31.81 (27.67)

32.59 (28.35)	

12.86 (11.88)

12.12 (10.54 )	

6.89 (5.99)

5.93 (5.16)



Peppers –  FL 

Aerial 5-day interval

Ground 5-day interval	

47.88 (41.66)

47.34 (41.19)	

5.72 (4.99)

5.54 (4.82)	

3.09 (2.69)

2.80 (2.44)

Tomatoes –  FL 

Aerial 5-day interval

Ground 5-day interval	

29.11 (25.32)

28.25 (24.58)	

3.99 (3.47)

3.75 (3.26)	

2.06 (1.79)

1.73 (1.51)

Tomatoes –  PA 

Aerial 5-day interval

Ground 5-day interval	

25.47 (22.16)

23.43 (20.38)	

6.22 (5.41)

5.62 (4.89)	

3.05 (2.65)

2.31 (2.01)

Tomatoes –  CA 

Aerial 5-day interval

Ground 5-day interval	

15.47 (13.45)

14.16 (12.32)	

7.21 (6.27)

6.30  (5.48)	

4.74 (4.12)

3.75 (3.26)

Tobacco –  NC 

Aerial 5-day interval

Ground 5-day interval	

10.14 (8.82 )

7.89 (6.86)

	

3.18 (3.31)

2. 34 (2.04)

	

2.29  (1.99)

1.43 (1.24)



In-furrow Treatment

Cotton – Mississippi2

Cotton – North Carolina

Cotton – Texas

Cotton- California	

0.81(0.70)

0.84(0.73)

0.76(0.66)

0.80(0.70)	

0.31(0.27)

0.17(0.15)

0.17(0.15)

0.28(0.24)	

0.30(0.26)

0.15(0.13)

0.15(0.13)

0.27(0.23)

Seed Treatment

Cotton – Mississippi

Cotton – North Carolina

Cotton – Texas 

Cotton-California	

0

0

0

0

	

0

0

0

0	

0

0

0

0



Seed Treatment

Sunflower-KS sorghum4	

0	

0	

0

Grey shading in agricultural commodity indicates  EDWC from previous DWA
(D332878, D316085, D316083, D339503 ; 05/14/07)

1 Estimates for carrot and sugarbeet are based on 3 applications of
0.267lb ai/acre

2 Estimates for cotton are based on a single in-furrow application of
0.267lb ai/acre. 

3 Converted concentrations based on the default Percent Crop Area Factor
of 0.87 are included in parenthesis. 

4 KS sorghum scenario was used as surrogate scenario for sunflowers

Ground Water

Estimated concentrations of total fenamidone residues in shallow
groundwater are shown in Table VIII.  

Table VIII. Estimated Exposure Concentrations of Total Residues in
Drinking Water Drawn from Ground Water.  	

Use Scenario	Total Application Rate 

(lbs ai/A)	Total Residues Concentration (µg/L)

Root Vegetables

Turnip Greens

Okra

Cilantro

Grapes	0.801	178



Model Outputs for NY grapes are shown in Attachment II

Attachment I

Table A-1.  Recommended metabolites for inclusion in the DWA for
proposed new uses. 

Company Code	Chemical Name 	Comments

RPA-412636	(S)-Methyl-5-phenylimidazolidine-2,4-dione

CAS Reg. No. 27539-12-41	Cleavage of the -N-N- bond of fenamidone and
elimination of the methylthio group

Aerobic soil and aerobic water-sediment systems; Field

RPA-412108
(5S)-3,5-dihydro-5-methyl-2-(methylthio)-5-phenyl-4H-imidazole-4-one

CAS Reg. No. 332855-82-0	Cleavage of the -N-N- bond of fenamidone. This
metabolite may be considered as the immediate precursor to RPA- 412636

Aerobic soil and aerobic water-sediment systems; Hydrolysis (pH 4; 9);
Photolysis

RPA-411639

	(5S)-3,5-5-methyl-2-(methylthio)-3-[(4-nitrophenyl)amino]-5-phenyl-4H-i
midazole-4-one

	Nitration of the -N-phenyl (anilo) group at the C-4 position
.Bridge-intact product

Can form RPA- 412708 by cleavage of the 

-N-N- bond

Aerobic soil and aerobic water-sediment systems;

RPA-413255

	(5S)-3,5-5-methyl-2-(methylthio)-3-[(2-nitrophenyl)amino]-5-phenyl-4H-i
midazole-4-one

	Nitration of the -N-phenyl (anilo) group at the C-2 position .
Bridge-intact product. Can form RPA- 412708 by cleavage of the -N-N-
bond

Aerobic soil and aerobic water-sediment systems;

RPA-409446	5-Methyl-3-[(4-nitrophenyl)amino-5—2,4-imidazolidinedione

(The code for the S-enantiomer is RPA-221607)	Nitration of the -N-phenyl
(anilo) group at C-2 position  Bridge-intact product; Elimination of the
methylthio group. Can form RPA- 412636 by cleavage of the 

-N-N- bond

Aerobic soil metabolism

RP- 410995	5-Methyl-3-[(2-nitrophenyl)amino-5—2,4-imidazolidinedione

(The code for the S-enantiomer is RPA-221701)	Nitration of the -N-phenyl
(anilo) group at C-2 position Bridge-intact product; Elimination of the
methylthio group. Can form RPA- 412636 by cleavage of the -N-N- bond

Aerobic soil metabolism



Chemical Structures

Attachment II

Modeling Outputs

NY Grapes-Aerial Application

stored as NYGRAir.out

Chemical: Fenamidone

PRZM environment: NYGrapesSTD.txt	modified Tueday, 29 May 2007 at
12:59:44

EXAMS environment: ir298.exv	modified Thuday, 29 August 2002 at 15:34:12

Metfile: w14860.dvf	modified Wedday, 3 July 2002 at 09:06:14

Water segment concentrations (ppb)

Year	Peak	96 hr	21 Day	60 Day	90 Day	Yearly

1961	5.786	5.685	5.284	4.623	4.173	1.642

1962	8.502	8.349	7.829	7.198	6.593	3.165

1963	7.614	7.472	7.222	6.392	5.836	3.251

1964	13.46	13.24	12.26	10.99	9.916	4.56

1965	11.51	11.3	10.53	9.189	8.245	4.483

1966	5.798	5.694	5.349	5.165	4.817	2.962

1967	15.76	15.48	14.76	12.77	11.47	5.008

1968	6.699	6.576	6.114	5.537	5.105	3.447

1969	7.446	7.312	6.799	5.969	5.382	2.741

1970	16.49	16.2	15.14	12.91	11.57	5.16

1971	17.47	17.16	15.96	13.72	12.31	6.297

1972	14.36	14.11	13.21	11.89	11.05	6.092

1973	6.087	5.976	5.61	4.973	4.545	3.157

1974	9.944	9.766	9.06	8.396	7.868	3.721

1975	10.27	10.08	9.369	8.019	7.243	3.929

1976	7.308	7.22	6.915	6.272	5.778	3.254

1977	12.68	12.45	11.78	10.79	9.79	4.545

1978	17.45	17.13	15.97	13.81	12.45	6.044

1979	16.37	16.08	14.92	12.74	11.42	6.43

1980	13.62	13.37	12.82	11.55	10.41	5.625

1981	10.17	9.983	9.324	8.278	7.7	4.465

1982	5.871	5.761	5.506	5	4.611	2.852

1983	10.9	10.7	10.3	9.203	8.501	3.926

1984	6.101	5.989	5.545	4.816	4.467	2.842

1985	11.33	11.13	10.3	8.753	7.855	3.582

1986	7.512	7.369	6.802	5.756	5.189	2.995

1987	9.407	9.221	8.609	7.923	7.19	3.478

1988	5.656	5.545	5.213	4.819	4.448	2.692

1989	5.783	5.674	5.401	4.788	4.433	2.332

1990	5.616	5.532	5.162	4.534	4.16	2.197

Sorted results

Prob.	Peak	96 hr	21 Day	60 Day	90 Day	Yearly

0.032258064516129	17.47	17.16	15.97	13.81	12.45	6.43

0.0645161290322581	17.45	17.13	15.96	13.72	12.31	6.297

0.0967741935483871	16.49	16.2	15.14	12.91	11.57	6.092

0.129032258064516	16.37	16.08	14.92	12.77	11.47	6.044

0.161290322580645	15.76	15.48	14.76	12.74	11.42	5.625

0.193548387096774	14.36	14.11	13.21	11.89	11.05	5.16

0.225806451612903	13.62	13.37	12.82	11.55	10.41	5.008

0.258064516129032	13.46	13.24	12.26	10.99	9.916	4.56

0.290322580645161	12.68	12.45	11.78	10.79	9.79	4.545

0.32258064516129	11.51	11.3	10.53	9.203	8.501	4.483

0.354838709677419	11.33	11.13	10.3	9.189	8.245	4.465

0.387096774193548	10.9	10.7	10.3	8.753	7.868	3.929

0.419354838709677	10.27	10.08	9.369	8.396	7.855	3.926

0.451612903225806	10.17	9.983	9.324	8.278	7.7	3.721

0.483870967741936	9.944	9.766	9.06	8.019	7.243	3.582

0.516129032258065	9.407	9.221	8.609	7.923	7.19	3.478

0.548387096774194	8.502	8.349	7.829	7.198	6.593	3.447

0.580645161290323	7.614	7.472	7.222	6.392	5.836	3.254

0.612903225806452	7.512	7.369	6.915	6.272	5.778	3.251

0.645161290322581	7.446	7.312	6.802	5.969	5.382	3.165

0.67741935483871	7.308	7.22	6.799	5.756	5.189	3.157

0.709677419354839	6.699	6.576	6.114	5.537	5.105	2.995

0.741935483870968	6.101	5.989	5.61	5.165	4.817	2.962

0.774193548387097	6.087	5.976	5.545	5	4.611	2.852

0.806451612903226	5.871	5.761	5.506	4.973	4.545	2.842

0.838709677419355	5.798	5.694	5.401	4.819	4.467	2.741

0.870967741935484	5.786	5.685	5.349	4.816	4.448	2.692

0.903225806451613	5.783	5.674	5.284	4.788	4.433	2.332

0.935483870967742	5.656	5.545	5.213	4.623	4.173	2.197

0.967741935483871	5.616	5.532	5.162	4.534	4.16	1.642

0.1	16.478	16.188	15.118	12.896	11.56	6.0872

					Average of yearly averages:	3.8958

Inputs generated by pe5.pl - Novemeber 2006

Data used for this run:

Output File: NYGRAir

Metfile:	w14860.dvf

PRZM scenario:	NYGrapesSTD.txt

EXAMS environment file:	ir298.exv

Chemical Name:	Fenamidone

Description	Variable Name	Value	Units	Comments

Molecular weight	mwt	311.4	g/mol

Henry's Law Const.	henry	1.37E-10	atm-m^3/mol

Vapor Pressure	vapr	2.6E-9	torr

Solubility	sol	7.8	mg/L

Kd	Kd		mg/L

Koc	Koc	26	mg/L

Photolysis half-life	kdp	5.4	days	Half-life

Aerobic Aquatic Metabolism	kbacw	137.78	days	Halfife

Anaerobic Aquatic Metabolism	kbacs	1386.29	days	Halfife

Aerobic Soil Metabolism	asm		days	Halfife

Hydrolysis:	pH 7	407	days	Half-life

Method:	CAM	2	integer	See PRZM manual

Incorporation Depth:	DEPI		cm

Application Rate:	TAPP	0.300	kg/ha

Application Efficiency:	APPEFF	0.95	fraction

Spray Drift	DRFT	0.16	fraction of application rate applied to pond

Application Date	Date	22-6	dd/mm or dd/mmm or dd-mm or dd-mmm

Interval 1	interval	10	days	Set to 0 or delete line for single app.

app. rate 1	apprate		kg/ha

Interval 2	interval	10	days	Set to 0 or delete line for single app.

app. rate 2	apprate		kg/ha

Record 17:	FILTRA	

	IPSCND	

	UPTKF	

Record 18:	PLVKRT	

	PLDKRT	

	FEXTRC	0.5

Flag for Index Res. Run	IR	Reservoir

Flag for runoff calc.	RUNOFF	total	none, monthly or total(average of
entire run)

NY Grapes-Ground Application

stored as NYGRGD.out

Chemical: Fenamidone

PRZM environment: NYGrapesSTD.txt	modified Tueday, 29 May 2007 at
12:59:44

EXAMS environment: ir298.exv	modified Thuday, 29 August 2002 at 15:34:12

Metfile: w14860.dvf	modified Wedday, 3 July 2002 at 09:06:14

Water segment concentrations (ppb)

Year	Peak	96 hr	21 Day	60 Day	90 Day	Yearly

1961	3.169	3.116	2.91	2.468	2.224	0.8716

1962	6.278	6.165	5.766	5.13	4.735	2.13

1963	5.024	4.931	4.692	4.211	3.81	2.18

1964	10.7	10.54	9.767	8.9	8.056	3.553

1965	8.639	8.488	7.994	6.968	6.259	3.457

1966	3.511	3.448	3.199	2.855	2.688	1.884

1967	13.21	12.97	12.37	10.71	9.627	4.001

1968	3.986	3.913	3.728	3.368	3.116	2.386

1969	4.404	4.326	4.033	3.598	3.237	1.641

1970	13.91	13.67	12.8	10.9	9.766	4.145

1971	15.17	14.91	13.87	11.94	10.71	5.324

1972	11.59	11.39	10.77	9.818	9.14	5.107

1973	3.667	3.629	3.47	3.14	2.904	2.061

1974	7.002	6.877	6.632	6.11	5.807	2.646

1975	7.603	7.459	6.954	5.97	5.372	2.867

1976	4.57	4.491	4.341	3.885	3.613	2.16

1977	9.85	9.671	9.299	8.625	7.843	3.501

1978	15.44	15.16	14.15	12.27	11.07	5.074

1979	14.14	13.89	12.89	11.02	9.884	5.479

1980	10.83	10.64	10.37	9.448	8.525	4.653

1981	7.737	7.593	7.067	6.1	5.668	3.444

1982	3.151	3.093	2.874	2.615	2.425	1.757

1983	8.542	8.381	7.965	7.021	6.545	2.909

1984	3.029	2.974	2.755	2.419	2.305	1.778

1985	8.54	8.389	7.768	6.572	5.889	2.55

1986	4.504	4.419	4.081	3.457	3.087	1.934

1987	6.799	6.676	6.193	5.784	5.266	2.446

1988	3.129	3.068	2.831	2.513	2.331	1.638

1989	2.948	2.892	2.676	2.449	2.276	1.245

1990	2.545	2.501	2.362	2.125	1.983	1.101

Sorted results

Prob.	Peak	96 hr	21 Day	60 Day	90 Day	Yearly

0.032258064516129	15.44	15.16	14.15	12.27	11.07	5.479

0.0645161290322581	15.17	14.91	13.87	11.94	10.71	5.324

0.0967741935483871	14.14	13.89	12.89	11.02	9.884	5.107

0.129032258064516	13.91	13.67	12.8	10.9	9.766	5.074

0.161290322580645	13.21	12.97	12.37	10.71	9.627	4.653

0.193548387096774	11.59	11.39	10.77	9.818	9.14	4.145

0.225806451612903	10.83	10.64	10.37	9.448	8.525	4.001

0.258064516129032	10.7	10.54	9.767	8.9	8.056	3.553

0.290322580645161	9.85	9.671	9.299	8.625	7.843	3.501

0.32258064516129	8.639	8.488	7.994	7.021	6.545	3.457

0.354838709677419	8.542	8.389	7.965	6.968	6.259	3.444

0.387096774193548	8.54	8.381	7.768	6.572	5.889	2.909

0.419354838709677	7.737	7.593	7.067	6.11	5.807	2.867

0.451612903225806	7.603	7.459	6.954	6.1	5.668	2.646

0.483870967741936	7.002	6.877	6.632	5.97	5.372	2.55

0.516129032258065	6.799	6.676	6.193	5.784	5.266	2.446

0.548387096774194	6.278	6.165	5.766	5.13	4.735	2.386

0.580645161290323	5.024	4.931	4.692	4.211	3.81	2.18

0.612903225806452	4.57	4.491	4.341	3.885	3.613	2.16

0.645161290322581	4.504	4.419	4.081	3.598	3.237	2.13

0.67741935483871	4.404	4.326	4.033	3.457	3.116	2.061

0.709677419354839	3.986	3.913	3.728	3.368	3.087	1.934

0.741935483870968	3.667	3.629	3.47	3.14	2.904	1.884

0.774193548387097	3.511	3.448	3.199	2.855	2.688	1.778

0.806451612903226	3.169	3.116	2.91	2.615	2.425	1.757

0.838709677419355	3.151	3.093	2.874	2.513	2.331	1.641

0.870967741935484	3.129	3.068	2.831	2.468	2.305	1.638

0.903225806451613	3.029	2.974	2.755	2.449	2.276	1.245

0.935483870967742	2.948	2.892	2.676	2.419	2.224	1.101

0.967741935483871	2.545	2.501	2.362	2.125	1.983	0.8716

0.1	14.117	13.868	12.881	11.008	9.8722	5.1037

					Average of yearly averages:	2.86408666666667

Inputs generated by pe5.pl - Novemeber 2006

Data used for this run:

Output File: NYGRGD

Metfile:	w14860.dvf

PRZM scenario:	NYGrapesSTD.txt

EXAMS environment file:	ir298.exv

Chemical Name:	Fenamidone

Description	Variable Name	Value	Units	Comments

Molecular weight	mwt	311.4	g/mol

Henry's Law Const.	henry	1.37E-10	atm-m^3/mol

Vapor Pressure	vapr	2.6E-9	torr

Solubility	sol	7.8	mg/L

Kd	Kd		mg/L

Koc	Koc	26	mg/L

Photolysis half-life	kdp	5.4	days	Half-life

Aerobic Aquatic Metabolism	kbacw	137.78	days	Halfife

Anaerobic Aquatic Metabolism	kbacs	1386.29	days	Halfife

Aerobic Soil Metabolism	asm		days	Halfife

Hydrolysis:	pH 7	407	days	Half-life

Method:	CAM	2	integer	See PRZM manual

Incorporation Depth:	DEPI		cm

Application Rate:	TAPP	0.300	kg/ha

Application Efficiency:	APPEFF	0.99	fraction

Spray Drift	DRFT	0.064	fraction of application rate applied to pond

Application Date	Date	22-6	dd/mm or dd/mmm or dd-mm or dd-mmm

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erval 1	interval	10	days	Set to 0 or delete line for single app.

app. rate 1	apprate		kg/ha

Interval 2	interval	10	days	Set to 0 or delete line for single app.

app. rate 2	apprate		kg/ha

Record 17:	FILTRA	

	IPSCND	

	UPTKF	

Record 18:	PLVKRT	

	PLDKRT	

	FEXTRC	0.5

Flag for Index Res. Run	IR	Reservoir

Flag for runoff calc.	RUNOFF	total	none, monthly or total(average of
entire run)

 The environmental fate data of fenamidone was evaluated by the EFED in
2002 (DPBarcode D282668 and D290237).

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