### U.S. ENVIRONMENTAL PROTECTIONAGENCY Washington, D.C. 20460

OFFICE OF CHEMICAL SAFETY AND POLLUTION PREVENTION



### PC Code: 128879 DP Barcode: 407680 Date: May 20, 2013
MEMORANDUM Subject:



### To:

From: TierII Drinking Water Assessmentto Establish Tolerances ofTriflumizole on Greenhouse Vegetables (Cucumber and Tomato), Pome Fruit Subgroup 11-10, Small Fruit Vine Climbing Subgroup 13-07F and Low Growing Berry Subgroup 13-07G (excluding Cranberry)
Michael Metzger, Branch Chief Risk Assessment Branch 7 Health Effects Division (7509P)
Steven Snyderman, Chemical Review Manager Avivah Jakob, Team Leader Michael Goodis, Branch Chief Risk Management and Implementation Branch III Pesticide Re-Evaluation Division (7508P) Christopher M. Koper, M

.S

., Chemist Sujatha Sankula, Ph.D., Lead Biologist Ed Odenkirchen, Ph.D., Branch Chief Environmental Risk Branch I Environmental Fate and Effects Division (7507P)
EXECUTIVE SUMMARY The Environmental Fate and Effects Division (EFED) conducted a Tier II drinking water assessment for a petition submitted by Chemtura Corporation to establish tolerances of triflumizole for Greenhouse Vegetables (Cucumber and Tomato), Pome Fruit Subgroup 11-10, Small FruitVine Climbing Subgroup 13-07F and the Low Growing Berry Subgroup 13-07G (excluding cranberry).

1

### Triflumizole is an imidazole fungicide that is effective in inhibiting ergosterol biosynthesis in fungi. Many fungi must synthesize ergosterol which is a compound needed for the stabilization ofmembranes that make up cell walls. This assessment was based oninformation contained in Terraguard® SC (EPA Reg. No. 400-521) and Procure® 480 SC (EPA Reg. No. 400-518) fungicide labels. The estimated drinking water concentrations (EDWCs) are based onthe maximum proposed application rates and management practices specified in the product labels. The EDWCs for the humanhealth risk assessment are presented in Table 

### 1.
For surface water, the EDWCs for the scenarios modeled inthis assessment did not exceed the previous EDWCs for use on ornamentals and cherries reported in the previous comprehensive drinking water assessment (parent D393186; sub D395021) to supportregistration review dated 09 January 2012. However, newpercent cropped area (PCA) guidance (US EPA, 2012) has been developed and the EDWCs were revised to reflect this change in guidance. The revised recommended 

### acute concentration of97.65 p.g/L, 

### annual mean (chronic) concentration of22.11 p.g/L 

### and the 30 year annual average concentration of15.88 p.g/L 

### are greaterthan the generated EDWCs in this assessment (Table 

### 5). Therefore, the current EDWCs for surface water do not supersede the revised drinking water concentrations for ornamentals and cherries.
For groundwater, SCI-GROW and PRZM-GW simulations were executed. Based onthe proposed highest annual use rates for pome fruit, the SCI-GROW model estimated a triflumizole concentration of2.07 J.lg/L (Table 

### 1). This value was lower than 3.11 J.lg/L reported in the comprehensive drinking water assessment dated 09 January 2012. In addition, PRZM-GW concentration estimates were less than SCI-GROW(< 1 J.lg/L). The current EDWCs do not supersede the previously recommended EDWC for groundwater.
In conclusion, the current EDWCs for the proposed uses for surface water and groundwater do 

## notsupersede the revised EDWCs for surface water and previously estimated EDWCs for groundwater for triflumizole. Ifadditional refinements are necessary, please contact Chris Koper at 703.347.8065 orkoper.christopher@epa.gov
Table 1. 

### Maximum Estimated DrinkingWaterConcentrations (EDWCs) 1 

### for SurfaceWaterand Ground Water Maximum 1-in-10 1-in-10 30- year DrinkingWater Model Method Application Rate year year average Source Scenario (interval between acute chronic 

### (p.g/L) applications) 

### (p.g/L) (p.g/L) PRZMIEXAMS 4 app x 0.50 lb a.i./acre Surface Water NC Apple (pome fruit) Aerial 52.36 14.84 10.00 (September 20 -foliar) (7 days)

Ground Water SCI-GROW (pome fruit)


# --- 4 app x 0.50 lb a.i./acre 2.07 2.07 2.07

PRZM-GW (pome fruit)


# --- 4 app x 0.50 lb a.i./acre 0.13 0.12· Wisconsin Com 

## --
2

### Table 1. 

### Maximum Estimated DrinkingWaterConcentrations (EDWCs) 1

### for SurfaceWaterand Ground Water Maximum 1-in-10 1-in-10 30- year DrinkingWater Model Method Application Rate year year average Source Scenario (intervalbetween acute chronic (p.tg/L) 

### applications) (p.tg/L) (p.tg/L) 11For surface water (PRZMIEXAMS), EDWC values adjusted with a Percent Cropped Area (PCA) factor of 

### 0.91.

For ground water (SCI-GROW and PRZM-GW), no PCA adjustment was utilized. 

## *PRZM-GW value represents the post-breakthrough average 

### (Table 6)


### Environmental Fate and Transport Characterization
The majorpathways oftriflumizole degradation appear to be hydrolysis under acidic and alkaline conditions (t112 of8.9 days atpH 5.0; t112 of3.9 days atpH 9.0), photolysis (t112 of2-3 days), anaerobic aquatic metabolism (t112 of7.7 days in a total water-sediment system), andto lesser extent aerobic soil metabolism (t112 of 18 days). Triflumizole is not likely to bepersistent under most environmental conditions. It

### is unlikely to be very mobile (Koc range 1286 to 4114) except for soils in a sand textural class (Koc 

## = 289) with loworganic material. Based onthe laboratory and field study findings it has potential to reach groundwater under vulnerable soil conditions (sandy soils), andit will reach surface waterinboththe dissolved form, and sorbed onto soils, and organic material. Detailed description offate and transportproperties of triflumizole canbe obtained from the comprehensive drinking water assessment (parent D393186; sub D395021) to support registration review dated 09 January 2012.



### TotalResidues During the HED MARC meeting (D280869), the MARC committee has not excluded the possible toxicological concern for the metabolites containing the 4-chloro-2-trifluoromethyl aniline moiety. The half-lives for anaerobic aquatic metabolism, aerobic soil metabolism, hydrolysis and photolysis were calculated collectively for the parent and degradates ofconcern. The estimated drinking water concentrations representthe degradates containing the 4-chloro-2- trifluoromethyl aniline moiety namely, FD-1-1, FM-6-1, FA-1-1, FM-5-1, FM-3-1, FD-2-1, and FM-8-1 along withthe parent compound.
Thehalf-lives derived for aquatic photolysis, soil photolysis, aerobic soil metabolism, and anaerobic aquatic metabolism for total residues (parent and its degradates) correspond to 12.7 days, 8 days, 44 days, and 142 days (in a total water-sediment system), respectively. These data suggestthattriflumizole and triflumizole degradates are moderately persistent inthe environment. The total residue levels during hydrolysis at all pH conditions are very stable (half-life ofseveral months to years). However, in the environmentthe microbial degradation pathways mighthave a greater influence than the abiotic pathways andtherefore, the total residues appear moderately stable in the environment. The registrant submitted a mobility study for one oftriflumizole degradates, FD-1-1. The degradate Koc values suggest that it is more mobile than the parent compound. The Freundlich 3

### Ko and Koc values for FD-1-1 range from 0.178-13.8 and 33.6-961.2, respectively. As an input parameterinPRZMIEXAM modeling an average Koc value for parent and the degradate (FD-1- 1) was used. The lowest Koc value ofall available Koc (parent and FD-1-1) was used in SCIGROW modeling. A recently submitted anaerobic aquatic metabolism study suggests that FA-ll may dissipate though volatilization. In this study, organic volatiles as extracted from the PUF plugs were mainly made up ofFA-1-1; i.e. S0.6% ofthe applied at study termination (36S days after application).

In this drinking water assessment, aquatic EECs were calculated for a total residues (triflumizole and its degradates). Detailed information onhowthe individual modeling input parameters were derived can be obtained from the "Tier I Estimated Drinking Water Concentrations for Triflumizole Including Degradates" memo (S. Ramasamy, March 3, 2002) (D2813S6). 

### Drinking Water Exposure Modeling Estimated drinking water concentrations (EDWCs) were generated using EFED's standard suite ofmodels using the currently registered maximum use rates for the commodities listed onthe labels. 

### A. Surface Water Assessment
A Tier II drinking water assessment was performedusing PRZM 3.12/EXAMS 2.98.04 coupled within the PES shell with index reservoir (IR) scenarios. The percent cropped area (PCA) adjustment factor of0.91 was utilized. 

### Table 2 lists the inputparameters used for the PRZMIEXAMS (PES) modeling.

4

### Table 2. PRZMIEXAMS Input Parameters for Triflumizole InputParameter: Value: Comment: Source: Scenario(s): Greenhouse Vegetables (Cucumber and Tomato): representative scenarios for EFED Scenarios FL Cucumber each use CA, FL, PA Tomato
Pome Fruit SubgrouQ II-I0: NC, OR, PAApple Small Fruit Vine Climbing SubgrouQ 13-07F: CA, NY Grape
Low Growing Bem SubgrouQ 13-07G: FL Strawberry CA Strawberry (RLF scenario) Maximum Single Greenhouse Vegetables (Cucumber and Tomato): recommended rates Procure® and Application Rate 0.125 (0. 140) Terraguard® Formulation lbs a.i./acre (kg a.i./ha) labels Pome Fruit SubgrouQ I 1-10: 0.50 (0.562) Small Fruit Vine Climbing SubgrouQ 13-07F: 0.25 (0.281)
Low Growing Bem SubgrouQ 13-07G: 0.25 (0.281) Applications per Year Greenhouse Vegetables (Cucumber and Tomato): 10 label directions. Label specifies Procure® and rates per season. Ifthere are Terraguard® Formulation Pome Fruit Subgroup I 1-10: 4 multiple growing seasons per labels \ year, yearly rates may be Small Fruit Vine Climbing Subgroup 13-07F: 4 higher.
Low Growing Berry Subgroup 13-07G: 4 Application Interval (days) Greenhouse Vegetables (Cucumber and Tomato): 7 label directions Procure® and Pome Fruit Subgroup I 1-10: 7 Terraguard® Formulation labels \ Small Fruit Vine Climbing Subgroup 13-07F: 14
Low Growing Berry Subgroup 13-07G: I 4



### 5

### Table2. PRZMIEXAMS InputParameters for Triflumizole InputParameter: Value: Comment: Source: Date oflnitial Application Greenhouse Vegetables (Cucumber and Tomato): For all crops, the date ofinitial Crop Scenarios and (scenario: day-month) FL Cucumber: 07-10 application was calculated from proposed labels CA Tomato: 29-06 the harvest date, interval FL Tomato: 12-03 between applications and the PA Tomato: 12-08 Pre-Harvest Interval (PHI)

. Pome Fruit Subgrou12 11-10: NC Apple: 20-09 ORApple: 26-09 PA Apple: 10-09 Small Fruit Vine Climbing Subgrou12 13-07F: CA Grape: 13-07 NY Grape: 27-08
Low Growing Bern: Subgrou12 13-07G: FL Strawberry: 03-01 CA Strawberry RLF: 19-05 Application Method Greenhouse Vegetables (Cucumber and Tomato): label directions Procure® and Foliar- aerial Terraguard® Formulation labels Pome Fruit Subgrou12 11-10: Foliar- aerial Airblast (orchard) Small Fruit Vine Climbing Subgrou12 13-07F: Foliar- ground
Low Growing Bern: Subgrou12 13-07G: Foliar- aerial and ground CAM Input 2 (foliar) linear foliar based on crop US EPA, 2005 canopy IPSCND Input Greenhouse Vegetables (Cucumber and Tomato): 3 remaining pesticide on foliage US EPA, 2005 is (3) is retained as surface Pome Fruit Subgroup 11-10: 3 residue and continues to decay. \ Small Fruit Vine Climbing Subgroup 13-07F: 3
Low Growing Berry Subgroup 13-07G: 3 Spray Drift Fraction 0

. 16 (aerial) 

# -- Input parameter guidance 0

.064 (ground) (USEPA, 2009) 0

.063 (airblast) Application Efficiency 0.95 (aerial)


## -- Input parameter guidance 0.99 (ground) (USEPA, 2009) 0.99 (airblast) Molecular Mass (g/mol) 345.75


## -- Product Chemistry Vapor Pressure at 25°C 1.43 X 10-6



## -- MRID 40494402 (torr) Henry's Law Constant 5.2 X 10-8



## -- Calculated from water (atm-m3/mol) solubility, vapor pressure and molecular weight


## 6

### Table 2. PRZMIEXAMS InputParametersfor Tritlumizole InputParameter: Value: Comment: Source: Solubility in Water (mg/L) 12.5 pH5.9 MRID 40494401 Organic Carbon Partition 1229 2 Average Koc value for parent MRID 40824601 and Coefficient (Koc) (Likgoc) and its degradate FD-1-1 40824602. Aerobic Soil Metabolism 44

.2 3 represents the 90th percentile MRID 00149861 Half-life (days) confidence bound on the mean half-life of5 values Aerobic Aquatic 88.4 assumed twice the aerobic soil Input parameter guidance Metabolism Half-life (days) metabolism value because the (USEPA, 2009) compound is stable to hydrolysis and no aerobic aquatic metabolism data are available Anaerobic Aquatic 426 (142 X 3) since only one half-life was MRID 47136403 Metabolism Half-life (days) available the input value was Input parameter guidance assumed to be three times the (USEPA, 2009) single half-life value derived from the parent and degradates (FA-1-1, FD-1-1 and M-1) Hydrolysis Half-lives (days) 2767 4 Average value for parent and MRID 40494404 its degradates Aqueous Photolysis 12.7 parameter calculated for parent MRID 40494405 Half-life (days) and degradates NA=Not Applicable 1= Maximum application rates do not round to a round application number

. When modeling, the remainder ofthe application rate is added as the last application number. However, this is not a full application. 2 

### = The average

### Koc obtained from a total oftenvalues; five values (2812, 289, 4114, 1286, 1993) for the parent and five values (247, 33.6, 961, 122, 435) ofits degradate FD-1-1. 3

### = Following the Total Toxic Residue (TTR) approach, this value represents the 90th percentile confidence bound on the mean half-life of5 values (44.3, 39.1, 17.3, 49, and 26.3) from the parent and degradates. 4 

### = The average value obtained from four combined half-lives available for the parent and degradates (5443, 2436, 680, 2520 days)


### B. Ground WaterAssessment
No ground water monitoring data were available for triflumizole. Therefore, the SCI-GROW and PRZM-GW models were used to estimate ground water concentrations. Screening Concentration in Ground Water (SCI-GROW v2.3, Jul. 29, 2003) is a regression model used as a screening tool to estimate pesticide concentrations found in ground water used as drinking water. PRZM-GW is a one-dimensional, finite-difference model that estimates the concentrations ofpesticides in groundwater. Descriptions ofall executable versions ofcurrent models used in drinking water exposure canbe obtained from URL link (http://www.epa.gov/oppefedl/models/waterO. Table 3 and Table 4 lists the modeling input parameters for SCI-GROW and PRZM-GW, respectively.

7

### Table 3. SCI-GROWInputParameters for Triflumizole InputParameter Value Comment Source Maximum Single Application 0

.50 (pome fruit) maximum single application rate Procure® 480 SC Rate pergrowing season (lbs Formulation label a.i./A) Applications per Year 4 (pome fruit) label directions Procure® 480 SC Formulation label Organic Carbon Partition 33.6 1 lowest Koc value ofthe parent and its degradate FD-1- MRID 4082460I Coefficient (Koc) (L/kg0c) 1because there was greater than a three-fold variation among ten values Aerobic Soil Metabolism 39

. 1 2 median halflife because there is more than 4 values as MRID 00149861 Half-life (days) directed by SCI-GROW guidance (US EPA, 2009) 1 = Individual Koc values for the parent (2812, 289, 4114, 1286, 1993) and degradate FD-1-1 (247, 33

.6, 961, 122, 435). 2 = Following the Total Toxic Residue (TTR) approach, the median was calculated from the following five values (44.3, 39

.1, 17.3, 49, 26.3)

. 

### Table4. PRZM-GW (vl.O 

### InputParameterValues for Triflumizole Parameters Value Data Source Comments Application Method above canopy Procure® 480 SC label


## --- (aerial) Application Rate 0.50 [0.562] Procure® 480 SC label


# --- (lbs

. a.i./acre) [kg/ha] Application Number 4 Procure® 480 SC label


# --- Application Interval (days) 7 Procure® 480 SC label 20-09 The date ofinitial application was calculated Application Dates 27-09 Crop Scenarios and from the harvest date, interval between (day-month) 04-10 proposed label info applications and the Pre-Harvest Interval 11-10 (PHI)

. Hydrolysis Half-Life (days) 5443 MRID 40494404 Maximum half-life ofparent and degradates at pH7 (5443, 2436, 680, 2520 days) 1
Aerobic Soil Metabolism Half- represents the 901 h percentile confidence life (days) 44

.2 MRID 00149861 bound on the mean half-life of5 values (44.3, 39.1 , 17.3, 49, and 26

.3 days) Average Koc value for parent (2812, 289, 

### Koc (mL/&,c) 1229 MRID 40824601 4114; 1286, 1993) and its degradate FD-1-1 MRID 40824602 (247, 33

.6, 961, 122, 435) days.

1Hydrolysis values are well beyond the duration ofthe study; however, these values were estimated for the PRZM-GW assessment. 

### ModelingResults The PRZMIEXAMS and SCI-GROW modeling results representing surface water and ground water estimated drinking water concentrations (EDWCs) are listed in Table 5. In addition, PRZM-GW groundwater modeling results are listed in 

### Table 6. Within PRZM-GW, the Florida potato, Georgia peanut, North Carolina cotton and Wisconsin com scenarios required the use of an 8

### extended weather file, which allows the user to run the simulation for up to 100 years in order to observe breakthrough. If dietary risks require refinement, higher-tiered, crop-specific and location-specific models and modeling scenarios can be used. Representative modeling output files are attached in 

## Appendix I.
Maximum Tier II drinking water estimates were based ontriflumizole use on pome fruit at the maximum application rate. For surface water, the aerial applicationto pome fruit (NC Apple) yielded the highest peak (acute), chronic and cancer-chronic EDWC values

. The 1-in-10 yr (acute), the 1-in-10 yr annual mean (chronic) and the 30-year annual mean (cancer chronic) concentrations were 52.36 p.g/L, 14.84 p.g/L and 10.00 p.g/L, respectively.
For groundwater, SCI-GROW and PRZM-GW models were utilized. Based onthe proposed highest annual use rate for pome fruit, the SCI-GROWmodel estimated the triflumizole concentration at 2.07 fJ.g/L. This concentration canbe considered as boththe acute and chronic EDWC values

. In

### addition, PRZM-GW concentration estimates were less than SCI-GROW(< 1 

### J.lg/L).


## Table 5. TriftumizoleEstimatedDrinkingWaterConcentrations (EDWCs) 1

## for SurfaceWaterand GroundWaterbased on selected Crop Scenarios PRZMIEXAMS Maximum 1-in-10 1-in-10 30- year Proposed LabelUse Scenario1 

### Method2 

### Application Rate year year average (intervalbetween acute chronic 

### (fJ.g/L) (first app date) applications) 

### (f.l.g/L) (f.l.g/L) SurfaceWater Terraguard® SC Formulation Greenhouse Vegetables FL Cucumber A I0 app@ O

.I25 lb a.i./acre 24.36 4.9I 3

.08 (Cucumber and Tomato

# i (October 07- foliar) (7 days) CA Tomato A I0 app@ 0.125 lb a.i./acre I4

.08 7.03 5.3I (June 29- foliar) (7 days) FL Tomato A 10 app @ O.I25 lb a.i./acre 31.72 5.78 3.66
!

### (March 12 -foliar) (7 days) PA Tomato A 10 app@ O.I25 lb a.i./acre 19

.10 8.4I 6.12

.(August 12- foliar) (7 days) Procure®480 SC Formulations Pome Fruit Subgroup 11

- NCApple A 4 app@ 0.50 lb a.i./acre 52.36 14.84 10

.00 10 (Sept. 20- foliar) (7 days) NCApple AB 4 app @ 0.50 lb a.i./acre 49.62 13.36 8.37 I

### (Sept. 20- foliar) (7 days) ORApple A 4 app @ 0.50 lb a.i./acre 24.08 Il.05 9.24 I

### (Sept. 26- foliar) (7 days) ORApple AB 4 app @ 0.50 lb a.i./acre 20.22 8.96 7.11 (Sept. 26- foliar) (7 days) PA Apple A 4 app@ 0.50 lb a.i./acre 30

.69 I4.52 9.02 (Sept. 10- foliar) (7 days) PA Apple AB 4 app @ 0.50 lb a.i./acre 25.45 12.60 6

.94

1 

### (Sept

. 10- foliar) (7 days) Small Fruit Vine CA Grape G 4 app @ 0.25 lb a.i./acre 4.62 2.I2 1.56 Climbing Subgroup 

### 13- (July I3 -foliar) (14 days) 

## 9

## Table5. TritlumizoleEstimatedDrinkingWaterConcentrations (EDWCs) 1 

## for SurfaceWaterand GroundWaterbased on selected Crop Scenarios Maximum 1-in-10 1-in-10 30- year PRZM/EXAMS Application Rate year year average ProposedLabelUse Scenario1 

### Method2 

### (interval between acute chronic 

### (Jlg/L) (first app date) applications) 

### (Jlg/L) (Jlg/L) 07F NY Grape G 4 app @ 0.25 lb a.i./acre 14.85 7.32 4.53 (August 27- foliar) (14 days) Low Growing Berry FL Strawberry A 4 app@ 0.25 lb a.i./acre 19.10 4.16 2.96 Subgroup 13-07G (January 03 -foliar) (14 days) FL Strawberry G 4 app @ 0.25 lb a.i./acre 18.28 3.82 2.58 (January 03 -foliar) (14 days) CA Strawberry A 4 app@ 0.25 lb a.i./acre 27.39 9.23 6.81 (May 19 -foliar) (14 days) CA Strawberry

I(May 19

- foliar) G 4 app@ 0.25 lb a.i./acre -(14 days) 27.88 8.56 6.07 

### Ground Water SCI-GROW Pome Fruit



## -- 4 app @ 0.50 lb a.i./acre 

### 2.07 2.07 2.07 11 For surface water (PRZMIEXAMS), EDWC values adjusted with a Percent Cropped Area (PCA) factor of0.91.

For ground water (SCI-GROW), no PCA adjustment was utilized. Bold numbers denote maximum EDWC values. 2 A = aerial application, G = ground application, AB = airblast 3 These EDWC values are outdoor exposure estimates. Exposure to drinking water would be from secondary sources (i.e disposal ofwastewater from greenhouse).



## Table 6. PRZM-GWEstimatedDrinkingWaterConcentrations in 

## GroundwaterResultingfrom theUse ofTritlumizole Highest Post Average

Application Rate and Scenario1 

### Simulation Daily Breakthrough Simulation Frequency Duration Value Average**(~IL)** 

### Breakthrough (years)**(~giL)** 

### Time (days) Florida Citrus 30 7.6 x 

## w-l 7.5 x 

## w-l 10281 4 app. X 0.50 lbs a.i./acre Florida Potato 100 7.6 x 

## w-· 5.4 x 

## w-· 26053 Georgia Peanut 100 7.8 x 

## w-j 1.1 x 

## w-j 20939 North Carolina Cotton 100 2.5x1o-L 2.1 x 

## w-L 11134 Delmarva Sweet Com 30 5.7 X 10-L 5.2 X 10-L 10349 Wisconsin Com 100 

# u x 

## w-l 1.2 X 10" 20664 1These scenarios are regional vulnerable sites for groundwater evaluation.


## Monitoring Data Comprehensive monitoring data for triflumizole in surface water and ground water were not available. Currently, there are no chemical-specific federal or state drinking/ground water standards for triflumizole.

10

### Uncertainties The aerobic soil metabolism half-life inputparameter was calculated for the parentand degradates. The submitted laboratory studies, however, suggestthat one ofdegradates is potentially volatile. Volatilizationmay be the major route ofdissipation for this degradate. These EDWCs generated for greenhouse (indoor) vegetables are outdoor exposure estimates. There is uncertainty in these estimates as exposure to drinking water would be from secondary sources (i.e disposal ofgreenhouse wastewater). References

USEPA. 2002. Ramasamy, S. Tier I Drinking Water Concentrations for Triflumizole including Degradates (D281356)
USEPA. 2005. PRZM-3, A Model for Predicting Pesticide and Nitrogen Fate inthe Crop Root and Unsaturated Soil Zones: Users Manual for Release 3.12.2 May 2005.
USEPA. 2009. Guidance for Selecting Input Parameters inModelingthe Environmental Fate and Transport ofPesticides, Version 2.1. U.S. Environmental Protection Agency, Office ofPrevention, Pesticides and Toxic Substances, Office ofPesticide Programs, Environmental Fate and Effects Division, October 22, 2009. USEPA. 2010. Water Models. U.S. Environmental Protection Agency, Pesticides: Science and Policy. Online at: http://www.epa.gov/oppefedllmodels/water/
USEPA. 2012. Guidance on Development and Use ofPercent Cropped Area and Percent Turf Area Adjustment Factors in Drinking Water Exposure Assessments: 2012 Update; U.S. Environmental Protection Agency, Office ofChemical Safety and Pollution Prevention, Office ofPesticide Programs, Environmental Fate and Effects Division, March 16, 2012.

APPENDIX 1: Representative Outputs

11

### PRZMIEXAMS: NC Apple- AerialApplication to represent PomeFruit

stored as NCAppleA.dvv.out CherT'11c::::al: Trlt'lurr.lz:ole IPRZI\I'I •nvlronrT'1Rnt: NCappi•STD.txt rT10dlt'led Tuaday

.. 29 tvtay 2007 at 1.3:.58:1.5 EXAI\I'IS envlronrT'1•nt: lr29B.exv rT'10dlt'led Tu•day

.. 2115 A.ua:ust: 200.S. at 05:1.4.:07 """'•t1"11e: w038:1..2..dvt'**~odlt'led** Tueday

.. 2CS A.uaust 2008 •t 05:1.4.:09 Wat•r ••arr.ent c::::onc::::entra"tlons (ppb)

vear P••k 96 hr 21. Day 60 D•v 90 Day V•erly

Sorted r•sul'ts Prob. :1..965 21..7'9 20.94 1.9•.5:1.. 1.5.39 1.3.22 3.48 :1..966 36.69 3.5.3 33.:1..9 27.83 23

. .5:1.. 9.C588 :1..967 :1..9.4:1.. 1.8.BS :1..7.:1..8 1..5.88 1.4.98 1.0.2.5 :1..96& 39.87 38.34 33.26 :ZS.&4 2:1...89 :1..0.2.5 :1..969 22.0:1.. 2:1...:25 1.9.78 :1..7.67 1.15.72 1.0.1A :1..970 34.75 33-BII 29.82 23.82 20.4 :1..0.53 :1..97:1.. 45.:1..8 43.9:1.. 4:1...:1..9 32.G& 2.7.69 1.3.07**1~7:2.** 34.32 33.09**30.~1** 27.42 2.4.99 13.67 ::1..973 21.22 20.61 ::1..8

..9.5 1.5.42 :1.4.61 1.0.34 1974 :LB....... ::1..7.95 16.25 :L3.CSB 13.3 9

.. 2&.5 1.97.5 47.74 4.5

..94 39.58**3.5-~** 32•.52 1.2..&3 ::1..976 33.86 32.7 29.78 24.01. 22.07 1.4.33 ::1..977 7.5.65 72.86 63.03 .5:1..-82 40.73 1.115.67 ::1..978 34.33 33-7 3:1...7 27.92 2.5.65 16.99 1979 ..54.69 .52

.. 71 47'.24 39.22 32.07 1.15.1.2 ::t.9ao 27

. .55 27-02 :2.5.1. 21-91 20.:1..5 1.3.as :1..981. 14.07 1.3

.. 53 :1..2.33 :1..1..:1.5 :1..0.32 7.347 1982 21-28 20.5 18-4!5 :1..5.915 :1.5.43 8.044 :1..983 23.7'7' 22.92 2:1...59 18.76 17-24 8.8:1.4 :1..984 :1..9-47 :1..8.77 :1..7.1.5 ::LS.72 1A.38 8.805 :1..985 1.4..2.:1.. 1.3.82 1.3.09 :1..1.-97 :1..1..6:1.. 7.497 :1..986 30.:1.. 28.9t5 2.5.:1..7 22.:1..2 :1..9.43 8

. .54 1987 2:1..-67 20.99 :1..9.:1..3 1.5-87 :1..4.44 9.473 19BII 20.83 20.1.2 :1..8"

. .59 1.5.76 1.4.84 8.865 1989 29-94 28.89 27.46 2..5.38 23.9 :1..0

. .51. 1.990 64.19 61.-9 .58.:1..2 46.47 38.74**1.6-~**

0.04 0.07 0.1.1. 0-:1..5 0.1.9 0-22 0.26 0.30 0.33 0.37 0.4:1.. 0.- 0.48 0

. .52 0-.56 0 •..59 0.153 0.57 0.70 0.74 0.78 0.8:1.. o.as 0.89 0.93**0-~0** Peak 96 hr**7.5-~** 72.815 64.:1..9 81.90 ..54.1159 52.7:1.. 47.74 ....S-94 4.5.:1..8 43.91. 39.87 38-34 36.69 35.30 34.75 33.BS 34.33 33.70 34.32 33.09 33.86 32.70 30.1.0 28.96 29.94 28.89 27.5115 27.02 23.77 22.92 22-0:1.. 21..25 2:1...7'9 20.99 2:1...67 20.94 2:1..28 20.6:1.. 21..2.2 2.0.50 2.0.83 2.0.:1..2 :1..9.47 ::LB-8.5 :1..9.4:1.. :LB.77 :1..8_...... 1.7.96 14.2:1.. 1.3.82 1A.07 1.3.1153 21. Day 60 Day 63.03 .51.-82 40.73 :1..6.99 .58.:1..2 415.47 38.74 1.8.67 47.24 39.22 32.52 1.6.:1.5 4:1..-:1..9 3.5.79 32.07 1.6.:1..2 39•.58 32.68 27.159 1.4.33 33.215 27.92 2..5.65 1.3.8.5 33.:1..9 27.83 :24.99 1.3.157 3:1...70 27.42 23-90 1.3.07

## !~:=~**1 ~:::**  29.78 :24.01. 27.46 23.152 :ZS.:L7 22.:1..2 23.51 :1..2.83 22.07 10.153 21..89 1.0.51 20.40 1.0.34 20.1.6 1.0.2.5 :Z.S.:l.O 21.91. :1..9.43 1.0.2.5 2:1..• .59 18.76 1.7.24 1.0.1.4 :1..9.78 17.67 1.15.72 9.159 :1..9

•.5:1.. 1CS.96 1..5.43 9.47 :1..9.:1..3 :1...5.88 :1.4.98 9.29 :1..8.95 1.5.87 1.4.84 8.87 18.59 1..5.76 1A.61 8.81 18.45 :1...5- 72 :1.4.44 8.8:1.. :1..7.:1..8 1.5.42 1.4.38 8.54 :1..7.15 1.5.39 1.3.30 8.04 :1..6.2.5 13.cs& :1..3.22 7.50 13.09 1.:1...97 1.1.51 7.35 12.33 :1..1.:1..115 10.32 3.4&
0.:1..0 Red "V'alues utilize

.. PCA "f'oct;or o# 0.91. 50 • .50 4:1...40 34-39 1.6.3:1.. :1.4.84 Average ot'y 1.0.99 :1..0.00 lnput5a:enerated by po5.pl- NoverT'1eber 2006
D•t• used t'orthls run: Output Fll•: NCAppi•Adw """'ett'lle: PRZI\I'I scenariO: EXAI\I'IS**envlron~ent** t'lle:**Che~lc::::ol** NarT'1e: D•sc::::rlptlon Pol'lolecular welgh't Henry•• '--""" Const. Vapor Pressure solubility Kd Koc Photolysis halt'-llt'e Aerobic Aqu•tlc::::**"""etebolls~** Ana•roblc:::: A.qu•tlc**1\fl•tabolls.~** A•roblc Soli**"""•t•bolla~** Hydrolysis: tvtethod: lncorporetlon Depth: Application Rate: Application Efficiency: sprey Drift Application Date Interval :I. app. rate :I. lntervel 2 epp. rate 2 Interval 3 app. ra'te 3 Record :1..7:

Record 1.8:

Flea 1"or Index Res. Run Flag 1"or runoff calc. W038:L2.dvt' NCappleSTO.tx"t: lr298.exv**Trlt'lu~lzole** Variable Non Value Unl"t:s Corr.rT'1ents**~W't:** 34.5-7.5**w~ol** h•nrv 5

..2.0E-oa**at~-,.,,..3/~ol** v•pr sol Kd Koc kdp kbacvv kbacs.


# ........ pH7 CAlVI DEPI TAIPIP APIPEFF DRFT Date lnte.--al •pprate Interval •pprate Interval appra-c:e FILTR.A. IIPSCND UIPTKF PLVKRT IPLDKRT FEXT"RC IR RUNC>FF :L.43E-06 torr 1.2

. .5 rng/L ms/L ::1..229 rns/L ::1..::2..7 days. 88.4 d•ys 425 days

.......2 day• ::2.767 d•ys ::2. Integer

em 0.5152 k.&/ha

0.95 t'ract:lon H•lt'-Uf'e H•lt'lt'e Halt'lt'• H•l1"1t'• Ha11"-111"e See PRZ""'**~anual**

0.15 t'ract:lon ot' application rate appll•d to pond 20-09 dd/rnrn or**dd/m~m** or dd-,.,rn or dd-rnrnrT'1 7 days set to 0 or delete line 'for single epp. 0.5152 ka/ha 7 days. 0.5152 ka/ha 7 days 0.5152. kg/ha 

### "

none. rT'1onthly ortotal(av•r•a• o1" entire run) 

### 12

### SCI-GROW: Pome Fruit
SCIGROW VERSION 2.3 ENVIRONMENTAL FATE AND EFFECTS DIVISION OFFICE OF PESTICIDE PROGRAMS U.S. ENVIRONMENTAL PROTECTION AGENCY SCREENING MODEL FOR AQUATIC PESTICIDE EXPOSURE
SciGrow version 2.3 chemical:Triflumizole time is 5/11/2013 17: 6: 1 Application Number of rate (lb/acre) applications Total Use (lb/acre/yr) Koc (ml/g)
0.500 4.0 2.000 3.36E+01 groundwater screening cond (ppb) 

### = 2.07 ug/L Soil Aerobic metabolism (days)
39.1

************************************************************************



### 13

## PRZM-GW: RepresentativeInputParameters**~** l'laM <.w (V•·r·.iou 1 01) 

### 1 ·- I

- 1!8_1 Fie Scenario utilities Help

Pesticide Scen.erio: Gener.el Scen.erio: Horizon Configuration Summary Output I T riflumizole Hydrolysis Half Life (days) Enter 0 for no degradation**~** Pesticide Application

Number of Applications 

### [D

® D.etes .ere Absolute 0 Dates: are Relative Application Refinemenb::

Applications occur every 

### [2J year(s) Applications occur

fromyear 

### D

toyear**~** Surface Soil Half Life (day") Enter 0 for no degr.ed.etion Sorption Coefficient rml/g)**~**
Day Month**9** 09 10 10 1 1229**I~ ~~c**  Application

Mass (kg/hAl 0.562 0.562 0.562 0.562 Applic.etion Method 1

... ground 2 ,.. above c.enopy

# ~

1/0 Fami!l' Fne Name: Notyet defined. 1/0 Working Directory: Notyet defined. Use File/Seve or Retieve

.



## PRZM-GW: Representative Output -Wisconsin Corn-100

## year simulation**~** PR7M c.w**(V···~'""** 1 01) 

### 1 "

- I

- r>ZI
F1le ScenM!o utilities

Pesticide Scen.erio: General Scen.erio: Horizon Configuration Summary Output '----------, Note: Time :series output is delivered to the working directory :specified below

_ Highest Daily Value (ppb) I 0.1 3 Simulation Average Value (ppb) I 0.0621 Average Breakthrough Time (days) 120664 Throughputs 11

.75**~======={** Post Breakthrough Average (ppb) I 0.119

0

. 12**1~ -~** **~~~~ ~~** **~~~ ------~** **--~ ~--~** 

0

.02

Save Graph Copy Graph 1/0 Fami!l' File Name: TriHumizole WI Corn 1/0 Working Directory: C:\Models\PRZM·GW\Runs\Triflumizole\



### 14