### UNITED STATES ENVIRONMENTAL PROTECTION AGENCY WASHINGTON D.C. , 20460

OFFICE OF CHEMICAL SAFETY AND POLLUTION PREVENT I ON

.



## PC Code: 090099 DP Barcode: 402603

MEMORANDUM

SUBJECT:

FROM:

THROUGH:

TO: Pyroxasulfone, He rbicide End-Use Product: V-10233, FierceTM Herbicide and Pyroxasulfone 85 WG Herbicide. Drinking Water Assessment of Pyroxasulfone Proposed Use on Cotton 

# 1

James Hetrick, Ph.D., Senior Science Adviso;..J""""' 

# C. f/-$.-,;£... 

# t/ J I 

# IJ Ecological Risk Assessment Branch III Environmental Fate and Effects Division

Dana Spatz

, Branch

# Ch~~~~("':::--:;~~-.31~1...;. Rosanna

# Louie-iuzwi~:~ment Pr ocess Ecological Risk Assessment Branch III Environmental Fate and Effects Division

Dan Kenny, Branch Chief Herbicide Branch Registration Division

This memorandum provides a drinking water assessment to support the proposed use of pyroxasulfone on cotton. Pyroxasulfone is a pre/early post-emergent herbicide in the pyrazole class. The maximum single application rate of pyroxasulfone is 0.1115lb a.i./A with a maximum seasonal application rate of 0.223 lb a.i./ A. It 

## can be applied using ground or aerial

spray. Application timing is pre- and early post emergent. Although several of the pyroxasulfone products have a mixture of pyroxasulfone and flumioxazin, this drinking water assessment will focus only on pyroxasulfone and its degradation products. Flumioxazin exposure in drinking

water will be addressed in a separate drinking water assessment.

· EFED recommends that the Health Effects Division use the results from PRZM-GW ground

water modeling for the human health dietary risk assessment. The EDWCs from PRZM-GW modeling are 210 J.lg/L for the daily peak concentration and 174 Jlg/L 

## for the 30 year average concentration.

Pyroxasulfone is mobile (average Koc= 94.75) and persistent (t 112 

## = 142 to 533 days) in terrestrial and aquatic environments

. There are two major degradation products (> 

## 10% of applied radioactivity) and 6 minor degradation products (<10% of applied radioactivity) detected in



# •

# 2 laboratory metabolism studies. Additionally, there is a high percentage of applied radioactivity (8-25% of applied radioactivity) identified as “bound” soil/sediment re sidues. Because the extraction of pyroxasulfone resi dues was conducted using only acetonitrile/water without the use of sequentially harsher soil extractants, there is un certainty regarding the identity and availability of the “bound” soil residues.

The drinking water assessment is based only on modeling because there are no monitoring data for pyroxasulfone. Screening level models using standard exposure scenarios were used to estimate concentrations of pyroxasulfone in gr oundwater and surface water. The modeling was conducted for the total pyroxasulf one residues [including parent and the degradation products 5- difluoromethoxy-1H-pyrazol-4-yl) methanesulfonic acid (M1) and 5-difluoro methoxy-1-methyl3-trifluoromethyl-1H-pyrazol-4- carboxylic acid (M3)] because the degradation products, M1 and M3, are considered as residues of con cern. Estimated drinking water concentrations (EDWC) were not corrected for percent cropped area (PCAs) because there are non-agricultural uses on the labels.

Based on Tier II modeling, the EDWC for total pyroxa sulfone residues in su rface source water is not expected to exceed 14.562 μg/L for the 1 in 10 year daily peak, 2.802 μg/L for 1 in 10 year annual average, and 1.897 μg/L for the 30 year annual average. Based on Tier I SCIGROW modeling, the EDWC in ground water is not e xpected exceed 6.24 μg/L. The EDWCs from PRZM-GW modeling are not expect ed to exceed 102 μg/L for da ily peak concentrations and 58.5 μg/L for 30 year average concentrations. Because the EDWCs for pyroxasulfone use on cotton are lower than the EDWC for pyroxasu lfone use on corn, soybean, wheat, fallow, bareground, and non-cropped areas, EFED recommends using the EDWCs from the previous drinking water assessment in the human h ealth exposure assessment (D365249, D390221).

Based on Tier II modeling for the preplant appl ication to corn and non-cropped uses, the EDWC for parent pyroxasulfone in surface source water is not expected to exceed 16.515 μg/L for the 1 in 10 year daily peak, 4.462 μg/L for 1 in 10 year annual average, and 2.534 μg/L for the 1 in 10 year annual average (D365249). The EDWC for to tal pyroxasulfone residue s in surface source water is not expected to exceed 16.728 μg/L for the 1 in 10 year daily peak, 7.477 μg/L for the 1 in 10 year annual average, and 4.570 μg/L for th e 1 in 10 year annual average. The EDWC in ground water is not expected exceed 1.93 μg/L for pyroxasulfone and 11.4 μg/L for total pyroxasulfone residues. The EDWCs from PRZM -GW modeling are not expected to exceed 210 μg/L for daily peak concentrations and 174 μg /L for 30 year average concentrations (D390221).

Use Profile

Pyroxasulfone is an herbicide in the pyrazole class. The registra nt is proposing the addition for use on cotton for three pyroxasulfone product la bels, including the Pyroxasulfone Technical, Pyroxasulfone 85 WG Herbicide, and V10233 Herbicide, FierceTM Herbicide ( Table 1 ). The V10233 Herbicide is a mixture of pyroxasulfone a nd flumioxazin. Additionally, pyroxasulfone can be tank mixed with 2,4-D, bromacil, chlo rsulfuron, dicamba, diuron, chlorpyralid, glyphosate, hexinone, imazapic, imazapyr, mets ulfuron methyl, norfurazon, oryzalin, pendimethalin, picloram, pramitol, simazine, sulf ometuron methyl, tebuthiur on, and triclopyr.

# 3 The maximum single application rate of pyro xasulfone for cotton is 0.1115 lb ai/A with a seasonal maximum rate of 0.223 lb ai/A. Pyro xasulfone can be applied using broadcast or banded ground spray as well as aerial spray. Application timing is pre- and early post emergent. Table 1: Label Recommended Application Rates, Intervals, and Methods

Product

EPA Reg. No. 

# Application Timing Application Method Application Interval Single Maximum Application Rate (lbs ai/A) Maximum Seasonal Application Rate (lbs ai/A) Pyroxasulfone 85WG

63588-92 Pre-plant, Pre/postemergent, Fall application, Dry Fertilizer Broadcast or SoilIncorporatedGround Spray 14 days 0.1115 0.223

V-10233 Herbicide

63588-93 Fall Burndown Spring Burndown Broadcast , Band or SoilIncorporatedGround /Aerial Spray N/A 0.07880 0.0788

FierceTM Herbicide Fall Burndown Spring Burndown Ground/Aerial Spray

N/A 0.0788 0.0788



# The crop uses sites on pyroxasulfone labels incl ude corn (sweet, field, popcorn), soybean, winter wheat, and cotton. Additionally, non-crop use s ites include fallow land and non-crop areas around farms, orchards, and vineyards. Fa llow land and crop use treatment requires consideration of rotation intervals because of the persistence of pyr oxasulfone. Recommended rotation intervals into treated fields are 4 months for winter wheat, 8 months for spring wheat, 9 months for corn, sunflower, dry common beans, canola, 11 months for alfalfa, barley, canola, and 12 months for all other crops.

The pyroxasulfone labels have standard runoff and ground water label advisory statements. Additionally, recommended spray drift buffer dist ances are stated on th e V10233 Herbicide label ( Table 2 )

.

Table 2: Proposed Spray Drift Buffers Product Label Recommended Spray Drift Buffers

V-10233 Herbicide Fierce Herbicide Spray Drift Buffers: 40 ft –non-target plants 100 ft- emerged cotton plants 40 ft – surface water

# 4 Environmental Fate Assessment

Pyroxasulfone is mobile (average K oc 

# = 94.75) and persistent (t 1/2 

# = 142 to 533 days) in terrestrial and aquatic environments ( Table 3 ). The major route of degrad ation can be associated with microbial-mediated degradation. Pyroxasulfone is stable to hydrolysis and photodegradation in water and soil. Field dissipation st udies indicate rapid dissipation (t 1/2 

# = 4 to 35 days) of pyroxasulfone. Degradation was identified as a potential route of pyroxa sulfone dissipation in field studies. Leaching also was identified as a route of dissipation of the metabolite 5- difluoromethoxy-1H-pyrazol-4-yl) methanesulfonic acid (M1). This degradation product was very persistent (extrapolated t 1/2 

# ~ 8 to 65 years) in labor atory metabolism studies.

Table 3: Environmental Fate Properties of Pyroxasulfone

PARAMETER VALUE Chemical and Physical Properties

Chemical name(s) 3[(5-difluoromethoxy-1-methyl-3- trifluoromethylpyrazol-4-yl) methylsulfonyl]-4,5- dihydro-5,5-dimethylisoxazole

CAS Number 44739-55-5 Molecular Weight (grams/mole) 367 g/mole Aqueous solubility (at 25  C) 3.49 mg/L Va p or Pressure 1.8E-8 tor r Henr y ’s Law Constan t 2.65E-9 atm m 3 

## /mol Environmental Fate Properties Hydrolysis half life (pH 4, pH 7, pH 9) Stable Aqueous photolysis half life 119 days Soil photolysis half life Stable (>30 days) Aerobic soil metabolism half-lives 142-533 days Anaerobic soil metabolism half-lives 145 -156 days Aerobic a q uatic metabolism half-lives ( s y stem ) 

# 108 -109 da y s* Anaerobic a q uatic metabolism half-lives ( s y stem ) 

# 69-70 da y s* Soil-water distribution coefficient (K oc 

# ) 57-119 * Calculated from combined resi dues of the test compound measured in both the aqueous and the soil/sediment phases of a given test system.

Another major degradation product was identi fied as 5-difluoro methoxy-1-methyl-3- trifluoromethyl-1H-pyrazol-4- carboxylic acid (M3). Minor metabolit es (<10% of applied radioactivity) of pyroxasulfone are identified as 3-(5-D ifluoromethoxy-3-trifluoromethyl-1Hpyrazol-4-yl methanesulfonyl)- 4,5-dihydro-5,5-dimethylisoxazole (M5), 3-(5-difluoromethoxy1-methyl-3-trifluoromethyl-1H-pyrazol- 4-yl methanesulfonyl)-4,5-dihydro-5,5- dimethylisoxazol-4-ol (M6), (5-difluoromet hoxy-1-methyl-3-trifluoromethyl-1H-pyrazol-4-yl) methanol (M8), 5-difluoromethoxy-3-trifluor omethyl-1H-pyrazol-4-car boxylic acid (M9), 5- Difluoromethoxy-1-methyl-3-trifluoromethyl-1 H-pyrazol-4-carbaldehyde (M10), and [3-5- Difluoromethoxy-1-methyl-3-trifluoromethyl-1H-pyrazol-4-ylme thanesulfonyl)-4,5-dihydro-5- methylisoxazol-5-yl] methanol (M11).

# 5 Additionally, there was a high pe rcentage of applied radio activity (8-25% of applied radioactivity) in “bound” soil/sediment residue s. Because the extraction of pyroxasulfone residues was conducted using only acetonitrile/water without the use of sequentially harsher extractants, there is uncertainty regarding the identity and av ailability of the “bound” soil residues.

Surface Water

The surface water modeling was conducted using PRZM (Version 3.122)/EXAMS (Version 2.98.04) models. No percent cropped area factor was applied because pyroxasulfone can be used in non-agricultural uses. PRZM input parameters on application rates, method, timing are shown in Table 4 . Model input parameters for total pyroxasulfone residues are shown in Table 5

. Metabolism half-lives for total pyr oxasulfone residues were calcul ated using a single first order (SFO) model for summed residues (pyroxasulfone + M1+M3).

Table 4: PRZM/EXAMS Simulated Application Rates, Method, Timing According to Proposed Label

Standard Scenario Label Application Time Scenario Emerge Date (mon-day) PRZM Application Time (mon-day) Number of Apps Application Interval Spray Method Application Rate (lbs/A)

CA Cotton Preemerg 5-1 4-25 1 NA Air 0.0788 Pre-plant 4-1 1/2 14 Ground 0.1115/0.223 Post 5-15 1/2 14 Ground 0.1115/0.223

Fall 10-15 1 NA Ground/Air 0.0788 MS Cotton Preemerg 5-1 4-25 1 NA Air 0.0788 Pre-plant 4-1 1/2 14 Ground 0.1115/0.223 Post 5-15 1/2 14 Ground 0.1115/0.223 Fall 10-15 1 NA Ground/Air 0.0788 NC Cotton Preemerg 6-1 5-20 1 NA Air 0.0788 Pre-plant 5-1 1/2 14 Ground 0.1115/0.223 Post 6-4 1/2 14 Ground 0.1115/0.223 Fall 10-15 1 NA Ground/Air 0.0788

# 6 Table 5: PRZM/EXAMS Input Parameters for Pyroxasulfone Total Residues

Parameter Pyroxasulfone Total Residues

(Parent, M1,M3) 

## Comment Reference

Aerobic Soil Metabolism Half-life (days) 1055 90 th 

## percentile of mean 47701736 47701737 Organic Carbon Partition Coefficient (K oc 

## ) (mL/ g oc 

## ) 94.75 Average 47701742

Aerobic Aquatic Half-Life (days) 270 90 th 

## percentile of mean 47701740

Anaerobic Aquatic half-life (days) 157 90 th 

## percentile of mean 47701741

Aqueous Photolysis half-life (days) Stable 47701734

Hydrolysis half-life (days) Stable 47701733

Molecular Weight (g/mole) 367 Physical Property

Henry’s Law constant (atm-m 3 

## /mol) 2.65E-9

Water Solubility @ 25°C (mg/L) 3.49

Vapor Pressure (torr) 1.8E-8



# Spray Drift Adjustments for Label Recommended Spray Drift Buffers

Spray drift fractions were recalculated to account for the recommended drift buffers on the V10233 Herbicide label. Because the spray drift fraction will be lower when considering a 100- foot buffer, only the 40-foot buffer is discussed below. The spray drift values were recalculated using the spray drift adjustment equa tions cited in Jones, et al. 2010 ( Table 6 ).

# 7 Table 6: Spray Drift Fractions for Proposed Aquatic Spray Drift Buffers

Buffer Size (ft) Spray Spray Drift Fraction in Stream (SDS) Spray Drift Fraction in Reservoir (SDR) Spray Drift Fractions without a Buffer Adjusted Spray Drift Fraction for Buffer

40 Aerial 0.1751 0.0704 0.016 0.0941 Adjusted Spray Drift Fraction= (SDS*0.60)+(SDR*5.248)/5.248



# Pyroxasulfone EDWCs

Non-PCA corrected estimated drinking water concentrations for pyroxasulfone in surface source drinking water are shown in Table 7

.

Table 7: Non-PCA Corrected Drinking Wat er Concentrations of Pyroxasulfone

Standard Scenario Label Application Time Number of Apps Method of App Spray Drift Buffer (feet) App Rate (lbs/A) Estimated Concentration (ug/L)

1 in 10 yr

Peak 1 in 10 yr Annual Average 30 year Annual Average CA Cotton Preemerg 1 Air 40 0.0788 1.096 0.392 0.182 Pre-plant 1 Air 40 0.0788 1.551 0.595 0.274 1 Ground None 0.1115 2.124 0.805 0.334 2 Ground None 0.1115 3.654 1.336 0.613 Post Plant 1 Ground None 0.1115 0.533 0.240 0.209 2 Ground None 0.1115 1.325 0.691 0.588 Fall 1 Ground None 0.1115 2.183 0.839 0.574 1 Air 40 0.0788 1.593 0.623 0.441 NC Cotton Preemerg 1 Air 40 0.0788 4.085 1.086 0.676 Pre-plant 1 Air 40 0.0788 3.787 1.082 0.642 1 Ground None 0.1115 5.461 1.565 0.912 2 Ground None 0.1115 9.698 2.675 1.897 Post Plant 1 Ground None 0.1115 5.921 1.458 0.768

2 Ground None 0.1115 10.396 2.773 1.655

Fall 1 Ground None 0.1115 8.506 2.236 1.544 1 Air 40 0.0788 5.850 1.544 1.075 MS Cotton Preemerg 1 Air 40 0.0788 1.238 0.864 0.640 Pre-plant 1 Air 40 0.0788 7.287 1.240 0.550 1 Ground None 0.1115 10.613 1.803 0.786 2 Ground None 0.1115 14.562 2.802 1.505 Post Plant 1 Ground None 0.1115 6.904 1.159 0.506 2 Ground None 0.1115 9.368 1.823 0.927 Fall 1 Ground None 0.1115 7.409 1.200 0.666 1 Air 40 0.0788 5.121 0.832 0.470

# 8 Ground Water

Concentration of pyroxasulfone residues in ground water were estimated using the S creening C oncentration I n Gro und W ater model (SCI-GROW) (Version 2.3) and PRZM-GW(Version 1).

SCI-GROW

The input parameters for SCI-GROW modeli ng are shown in Table 8. The maximum concentration of pyroxasulfone in ground water is not expected to exceed 6.24 μg/L (Table 9). Table 8: Input Parameters for SCI-GROW Modeling

Parameter Pyroxasulfone Total Residue Comment Reference

Aerobic Soil Metabolism Halflife (days) 

# 1055 90 t h 

# percentile 47701736 47701737

Organic Carbon Partition Coefficient (K oc 

## ) (mL/ g oc 

## ) 

# 94.75 Average 47701742

Application Rate (lbs/A) 

# 0.1115 Label

Application Number 

# 2 Label

Table 9: SCI-GROW Concentration

Pesticide Concentration (ug/L) Pyroxasulfone Total Residue 

# 6.24

PRZM-GW Modeling

The PRZM GW model uses the Pesticide Root Zone Model (PRZM) to estimate pesticide leaching in several vulnerable soils. It is built as a Visual Basic to ol that generates input files for PRZM, runs PRZM, and performs some post pro cessing. A 30 year daily time series file is produced as the main output product.

In the conceptual model, a pesticide is applie d to a crop and hydrologi cal processes drive the pesticide through the ground and into aquifer pos itioned at a depth below the surface (scenario dependent). The pesticide sorbs and degrades as it travels through the profile with surface degradation declining in proporti on to a depth of 1 meter wher e the surface degradation is assumed to be zero. Hydrolysis is the only degr adation considered in the subsoil (>1 meter depth) and in the aquifer. Output concentrations are taken as the vertical spatial average of the (saturated) aquifer from 9 to 10 meters. Thirty year time series output files are produced from PRZM-GW.

# 9 The modeling was conducted on standard leaching s cenarios in NC, GA, FL, DE, and WI. These scenarios are representative of vulnerable soils in agriculture areas. Mode l input parameters in PRZM GW are shown in Table 10. The aerobic and hydrolysis ha lf-lives were estimated for parent and its degradation products M1 and M3.

Table 10: PRZM GW Tier II Model Input Parameters for Pyroxasulfone Residues (Parent +M1+M3) Input Parameter Value Source

Application Rate 0.1115 lbs ai/A Label

Application

Interval 14 days Label

Hydrolysis

Half-life Stable 47701733

Soil Half-life 1055 days 47701736 47701737 Koc 94.75 L/g-OC 47701742

Model Output

Tier II PRZM GW modeling indicate that pyro xasulfone and its degradation products have a potential to leach into the ground water (Table 11). The estimated pyroxasulfone residue concentration is substantially higher than the Ti er I SCIGROW estimates. This result is not unexpected because the persistence and mobility of pyroxasulfone residues allows accumulation of residues in ground water.

Table 11. PRZM-GW Estimates of Pyroxasulfone for the Proposed New Uses.

Pyroxasulfone SCI-GROW (μg/L) PRZM-GW (μg/L)

Scenario Peak Average 2 application @ 0.1115 lbs a.i./acre FLORIDA - potato - Met File (13889.dvf) Jacksonville

6.24 27.1 23.5 DELMARVA sweet corn - Evesboro sandy loam 50.5 39.2

Wisconsin Corn - WI Central Sands 102 87.4 Florida Citrus - FL Central Ridge, Polk County - (Tampa) Met File (12842.dvf) - Astatula sand, hrgb A 56.6 42.2

NC Eastern Coastal Plain - Norfolk loamy sand - Cotton 58.5 46.1 GA - Southern Coastal Plain, Tifton loamy sand - Peanuts 25.7 21.1

# 10 Monitoring Data

There are no water monito ring data for pyroxasulfone.

Uncertainty

There is a high percentage of a pplied radioactivity (8-25% of a pplied radioactivity) identified as “bound” soil/sediment residues. Because th e extraction of pyroxasulfone residues was conducted using only acetonitrile/water without the use of sequentially harsher soil extractants, there is uncertainty regarding the identity a nd availability of the “bound” soil residues. Additionally, the major degradati on product M1 is very persistent in aerobic soil metabolism studies. The modeling was conducted for pyroxasulfone residues including parent pyroxasulfone, M1, and M3). Although the in corporation of bound resi dues would increase (~2X) half-lives of pyroxasul fone in soil and aquatic enviro nments, the pyroxasulfone residue half-lives used in th is exposure assessment (157 to 1055 da ys) represent a persistent compound. Additionally, the EDWCs in ground water and surface are not expected to substantially change for half-lives exceeding 1 year.

# 11 

# APPENDIX

CA Cotton

Pre-emergent, Aerial stored as 1Cacot.out Chemical: pyroxasulfone PRZM environment: CAcotton_WirrigSTD.txt modified Tueday, 29 May 2007 at 12:42:12 EXAMS environment: ir298.exv modified Tueday, 26 August 2008 at 05:14:08 Metfile: w93193.dvf modified Tueday, 26 August 2008 at 05:16:12 Water segment concentrations (ppb)

Year Peak 96 hr 21 Day 60 Day 90 Day Yearly 1961 0.3029 0.2991 0.2837 0.2518 0.229 0.1019 1962 0.3424 0.3381 0.3208 0.2855 0.2605 0.1332 1963 1.496 1.478 1.402 1.244 1.136 0.5299 1964 0.5041 0.4985 0.4748 0.4248 0.3893 0.2593 1965 0.3731 0.3687 0.35 0.3113 0.2849 0.158 1966 0.354 0.3496 0.331 0.2927 0.2667 0.1407 1967 0.3497 0.3458 0.3284 0.2915 0.2659 0.1371 1968 0.3473 0.343 0.3253 0.2886 0.2627 0.136 1969 0.3495 0.3453 0.3273 0.2901 0.2649 0.1382 1970 0.3496 0.3455 0.3275 0.2896 0.2636 0.1368 1971 0.3487 0.3445 0.3274 0.2917 0.2663 0.1383 1972 0.3494 0.3451 0.3271 0.2893 0.2633 0.137 1973 0.3493 0.345 0.3267 0.2881 0.2619 0.1363 1974 0.3486 0.3444 0.3266 0.2892 0.2633 0.1362 1975 0.3487 0.3447 0.3272 0.2901 0.2647 0.1383 1976 0.3506 0.3465 0.3286 0.2913 0.2661 0.1401 1977 0.3507 0.3463 0.3321 0.3014 0.2752 0.1427 1978 1.162 1.148 1.087 0.9603 0.8732 0.4064 1979 0.4493 0.444 0.4214 0.3736 0.3404 0.2125 1980 0.3604 0.356 0.3379 0.3005 0.2744 0.146 1981 0.3495 0.3452 0.327 0.2885 0.2612 0.1342 1982 0.3466 0.3425 0.3248 0.2881 0.2631 0.1361 1983 1.341 1.324 1.252 1.104 1.004 0.4654 1984 0.4723 0.4669 0.4425 0.391 0.3556 0.2271 1985 0.3615 0.3569 0.3381 0.2987 0.2707 0.1439 1986 0.3475 0.3432 0.3249 0.2867 0.2603 0.1337 1987 0.3459 0.3415 0.3249 0.3082 0.2837 0.1465 1988 0.3526 0.3483 0.3305 0.2935 0.2674 0.1388 1989 0.4316 0.426 0.4033 0.3627 0.3366 0.1719 1990 0.3632 0.3586 0.34 0.3015 0.2745 0.147

Sorted results Prob. Peak 96 hr 21 Day 60 Day 90 Day Yearly 0.032258064516129 1.496 1.478 1.402 1.244 1.136 0.5299 0.0645161290322581 1.341 1.324 1.252 1.104 1.004 0.4654 0.0967741935483871 1.162 1.148 1.087 0.9603 0.8732 0.4064 0.129032258064516 0.5041 0.4985 0.4748 0.4248 0.3893 0.2593 0.161290322580645 0.4723 0.4669 0.4425 0.391 0.3556 0.2271 0.193548387096774 0.4493 0.444 0.4214 0.3736 0.3404 0.2125 0.225806451612903 0.4316 0.426 0.4033 0.3627 0.3366 0.1719 0.258064516129032 0.3731 0.3687 0.35 0.3113 0.2849 0.158 0.290322580645161 0.3632 0.3586 0.34 0.3082 0.2837 0.147 0.32258064516129 0.3615 0.3569 0.3381 0.3015 0.2752 0.1465 0.354838709677419 0.3604 0.356 0.3379 0.3014 0.2745 0.146 0.387096774193548 0.354 0.3496 0.3321 0.3005 0.2744 0.1439 0.419354838709677 0.3526 0.3483 0.331 0.2987 0.2707 0.1427 0.451612903225806 0.3507 0.3465 0.3305 0.2935 0.2674 0.1407 0.483870967741936 0.3506 0.3463 0.3286 0.2927 0.2667 0.1401 0.516129032258065 0.3497 0.3458 0.3284 0.2917 0.2663 0.1388 0.548387096774194 0.3496 0.3455 0.3275 0.2915 0.2661 0.1383 0.580645161290323 0.3495 0.3453 0.3274 0.2913 0.2659 0.1383 0.612903225806452 0.3495 0.3452 0.3273 0.2901 0.2649 0.1382 0.645161290322581 0.3494 0.3451 0.3272 0.2901 0.2647 0.1371 0.67741935483871 0.3493 0.345 0.3271 0.2896 0.2636 0.137 0.709677419354839 0.3487 0.3447 0.327 0.2893 0.2633 0.1368 0.741935483870968 0.3487 0.3445 0.3267 0.2892 0.2633 0.1363

# 12 0.774193548387097 0.3486 0.3444 0.3266 0.2886 0.2631 0.1362 0.806451612903226 0.3475 0.3432 0.3253 0.2885 0.2627 0.1361 0.838709677419355 0.3473 0.343 0.3249 0.2881 0.2619 0.136 0.870967741935484 0.3466 0.3425 0.3249 0.2881 0.2612 0.1342 0.903225806451613 0.3459 0.3415 0.3248 0.2867 0.2605 0.1337 0.935483870967742 0.3424 0.3381 0.3208 0.2855 0.2603 0.1332 0.967741935483871 0.3029 0.2991 0.2837 0.2518 0.229 0.1019

0.1 1.09621 1.08305 1.02578 0.90675 0.82481 0.39169 Average of yearly averages: 0.18165

Inputs generated by pe5.pl - Novemeber 2006

Data used for this run: Output File: 1Cacot Metfile: w93193.dvf PRZM scenario: CAcotton_WirrigSTD.txt EXAMS environment file: ir298.exv Chemical Name: pyroxasulfone Description Variable Name Value Units Comments Molecular weight mwt 367 g/mol Henry's Law Const. henry 2.65E-9 atm-m^3/mol Vapor Pressure vapr 1.8E-8 torr Solubility sol 3.49 mg/L Kd Kd mg/L Koc Koc 94.75 mg/L Photolysis half-life kdp days Half-life Aerobic Aquatic Metabolism kbacw 270 days Halfife Anaerobic Aquatic Metabolism kbacs 157 days Halfife Aerobic Soil Metabolism asm 1055 days Halfife Hydrolysis: pH 7 days Half-life Method: CAM 2 integer See PRZM manual Incorporation Depth: DEPI cm Application Rate: TAPP 0.0883 kg/ha Application Efficiency: APPEFF 0.95 fraction Spray Drift DRFT 0.094 fraction of application rate applied to pond Application Date Date 25-4 dd/mm or dd/mmm or dd-mm or dd-mmm Record 17: FILTRA IPSCND 1

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)

Preplant. Aerial stored as 2Cacot.out Chemical: pyroxasulfone PRZM environment: CAcotton_WirrigSTD.txt modified Tueday, 29 May 2007 at 12:42:12 EXAMS environment: ir298.exv modified Tueday, 26 August 2008 at 05:14:08 Metfile: w93193.dvf modified Tueday, 26 August 2008 at 05:16:12 Water segment concentrations (ppb)

Year Peak 96 hr 21 Day 60 Day 90 Day Yearly 1961 0.3689 0.3644 0.3461 0.3127 0.296 0.1423 1962 0.3574 0.3529 0.3351 0.2993 0.275 0.1452 1963 1.548 1.53 1.464 1.342 1.236 0.5974 1964 0.5616 0.5554 0.53 0.4772 0.44 0.2768 1965 0.4388 0.4337 0.4165 0.3825 0.3532 0.1915 1966 0.3665 0.3619 0.3434 0.3057 0.2798 0.1497 1967 0.7661 0.7593 0.7398 0.6706 0.6162 0.3013 1968 1.067 1.054 1.002 0.8938 0.8186 0.4118 1969 1.613 1.593 1.515 1.35 1.237 0.6223 1970 0.5203 0.5146 0.4915 0.4419 0.4061 0.2567 1971 1.551 1.533 1.457 1.3 1.189 0.5766 1972 0.5245 0.5186 0.4945 0.4438 0.4077 0.2597 1973 0.3755 0.371 0.353 0.315 0.2882 0.1562 1974 0.5298 0.5234 0.4977 0.4443 0.4068 0.2035 1975 0.3715 0.3673 0.3503 0.3143 0.2886 0.1568 1976 0.3542 0.3501 0.3342 0.2992 0.2746 0.1451

# 13 1977 0.3519 0.3475 0.3296 0.2986 0.2764 0.1443 1978 1.425 1.408 1.339 1.194 1.092 0.5213 1979 0.488 0.4824 0.4595 0.4115 0.3774 0.232 1980 0.3657 0.3613 0.3435 0.3071 0.2822 0.1503 1981 0.7165 0.7076 0.6713 0.5937 0.5395 0.27 1982 0.5703 0.5637 0.5369 0.4791 0.4448 0.242 1983 0.3828 0.3784 0.3613 0.349 0.3268 0.18 1984 0.3591 0.3548 0.3374 0.3003 0.2743 0.1418 1985 0.3465 0.342 0.3241 0.288 0.263 0.1335 1986 0.345 0.3407 0.3236 0.2882 0.2633 0.1339 1987 0.3457 0.3413 0.3235 0.2966 0.2787 0.1467 1988 1.769 1.751 1.672 1.495 1.375 0.6488 1989 0.5481 0.5415 0.515 0.4975 0.4756 0.3077 1990 0.9382 0.9263 0.8781 0.7785 0.709 0.3652

Sorted results Prob. Peak 96 hr 21 Day 60 Day 90 Day Yearly 0.032258064516129 1.769 1.751 1.672 1.495 1.375 0.6488 0.0645161290322581 1.613 1.593 1.515 1.35 1.237 0.6223 0.0967741935483871 1.551 1.533 1.464 1.342 1.236 0.5974 0.129032258064516 1.548 1.53 1.457 1.3 1.189 0.5766 0.161290322580645 1.425 1.408 1.339 1.194 1.092 0.5213 0.193548387096774 1.067 1.054 1.002 0.8938 0.8186 0.4118 0.225806451612903 0.9382 0.9263 0.8781 0.7785 0.709 0.3652 0.258064516129032 0.7661 0.7593 0.7398 0.6706 0.6162 0.3077 0.290322580645161 0.7165 0.7076 0.6713 0.5937 0.5395 0.3013 0.32258064516129 0.5703 0.5637 0.5369 0.4975 0.4756 0.2768 0.354838709677419 0.5616 0.5554 0.53 0.4791 0.4448 0.27 0.387096774193548 0.5481 0.5415 0.515 0.4772 0.44 0.2597 0.419354838709677 0.5298 0.5234 0.4977 0.4443 0.4077 0.2567 0.451612903225806 0.5245 0.5186 0.4945 0.4438 0.4068 0.242 0.483870967741936 0.5203 0.5146 0.4915 0.4419 0.4061 0.232 0.516129032258065 0.488 0.4824 0.4595 0.4115 0.3774 0.2035 0.548387096774194 0.4388 0.4337 0.4165 0.3825 0.3532 0.1915 0.580645161290323 0.3828 0.3784 0.3613 0.349 0.3268 0.18 0.612903225806452 0.3755 0.371 0.353 0.315 0.296 0.1568 0.645161290322581 0.3715 0.3673 0.3503 0.3143 0.2886 0.1562 0.67741935483871 0.3689 0.3644 0.3461 0.3127 0.2882 0.1503 0.709677419354839 0.3665 0.3619 0.3435 0.3071 0.2822 0.1497 0.741935483870968 0.3657 0.3613 0.3434 0.3057 0.2798 0.1467 0.774193548387097 0.3591 0.3548 0.3374 0.3003 0.2787 0.1452 0.806451612903226 0.3574 0.3529 0.3351 0.2993 0.2764 0.1451 0.838709677419355 0.3542 0.3501 0.3342 0.2992 0.275 0.1443 0.870967741935484 0.3519 0.3475 0.3296 0.2986 0.2746 0.1423 0.903225806451613 0.3465 0.342 0.3241 0.2966 0.2743 0.1418 0.935483870967742 0.3457 0.3413 0.3236 0.2882 0.2633 0.1339 0.967741935483871 0.345 0.3407 0.3235 0.288 0.263 0.1335

0.1 1.5507 1.5327 1.4633 1.3378 1.2313 0.59532 Average of yearly averages: 0.27368

Inputs generated by pe5.pl - Novemeber 2006

Data used for this run: Output File: 2Cacot Metfile: w93193.dvf PRZM scenario: CAcotton_WirrigSTD.txt EXAMS environment file: ir298.exv Chemical Name: pyroxasulfone Description Variable Name Value Units Comments Molecular weight mwt 367 g/mol Henry's Law Const. henry 2.65E-9 atm-m^3/mol Vapor Pressure vapr 1.8E-8 torr Solubility sol 3.49 mg/L Kd Kd mg/L Koc Koc 94.75 mg/L Photolysis half-life kdp days Half-life Aerobic Aquatic Metabolism kbacw 270 days Halfife Anaerobic Aquatic Metabolism kbacs 157 days Halfife Aerobic Soil Metabolism asm 1055 days Halfife Hydrolysis: pH 7 days Half-life

# 14 Method: CAM 2 integer See PRZM manual Incorporation Depth: DEPI cm Application Rate: TAPP 0.0883 kg/ha Application Efficiency: APPEFF 0.95 fraction Spray Drift DRFT 0.094 fraction of application rate applied to pond Application Date Date 1-4 dd/mm or dd/mmm or dd-mm or dd-mmm Record 17: FILTRA IPSCND 1

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)

Preplant, Ground, 1 application stored as 3Cacot.out Chemical: pyroxasulfone PRZM environment: CAcotton_WirrigSTD.txt modified Tueday, 29 May 2007 at 12:42:12 EXAMS environment: ir298.exv modified Tueday, 26 August 2008 at 05:14:08 Metfile: w93193.dvf modified Tueday, 26 August 2008 at 05:16:12 Water segment concentrations (ppb)

Year Peak 96 hr 21 Day 60 Day 90 Day Yearly 1961 0.4079 0.4029 0.3827 0.3406 0.3177 0.1549 1962 0.3518 0.3475 0.33 0.2949 0.271 0.1452 1963 2.117 2.092 2.002 1.833 1.689 0.8084 1964 0.6487 0.6416 0.6127 0.5525 0.5099 0.3357 1965 0.4776 0.472 0.4512 0.4138 0.3828 0.21 1966 0.361 0.3565 0.3384 0.3013 0.2759 0.1498 1967 0.9601 0.9492 0.9254 0.8405 0.7726 0.373 1968 1.395 1.378 1.31 1.169 1.07 0.5366 1969 2.203 2.176 2.07 1.844 1.69 0.8457 1970 0.5885 0.5822 0.5565 0.5012 0.461 0.3073 1971 2.125 2.099 1.996 1.779 1.627 0.7784 1972 0.5947 0.5881 0.5613 0.5046 0.464 0.312 1973 0.3751 0.3707 0.3528 0.315 0.2883 0.1597 1974 0.6029 0.5956 0.5663 0.5055 0.4628 0.2294 1975 0.3696 0.3655 0.3487 0.3131 0.2875 0.1592 1976 0.343 0.339 0.324 0.2902 0.2664 0.1413 1977 0.3393 0.335 0.3178 0.2902 0.27 0.1416 1978 1.929 1.906 1.812 1.616 1.477 0.6984 1979 0.5419 0.5358 0.5108 0.4582 0.4207 0.2725 1980 0.3623 0.358 0.3404 0.3045 0.2799 0.1518 1981 0.8971 0.886 0.8404 0.7428 0.6743 0.3293 1982 0.6732 0.6653 0.6337 0.5656 0.5192 0.2863 1983 0.4074 0.4025 0.3817 0.3646 0.3444 0.1945 1984 0.3522 0.348 0.331 0.2947 0.2692 0.141 1985 0.3345 0.3303 0.313 0.2782 0.254 0.1292 1986 0.3324 0.3283 0.3118 0.2777 0.2537 0.1291 1987 0.333 0.3287 0.3115 0.2905 0.2767 0.1474 1988 2.448 2.424 2.315 2.066 1.901 0.8867 1989 0.6635 0.6555 0.6228 0.5859 0.5661 0.3843 1990 1.228 1.213 1.149 1.019 0.9275 0.4689

Sorted results Prob. Peak 96 hr 21 Day 60 Day 90 Day Yearly 0.032258064516129 2.448 2.424 2.315 2.066 1.901 0.8867 0.0645161290322581 2.203 2.176 2.07 1.844 1.69 0.8457 0.0967741935483871 2.125 2.099 2.002 1.833 1.689 0.8084 0.129032258064516 2.117 2.092 1.996 1.779 1.627 0.7784 0.161290322580645 1.929 1.906 1.812 1.616 1.477 0.6984 0.193548387096774 1.395 1.378 1.31 1.169 1.07 0.5366 0.225806451612903 1.228 1.213 1.149 1.019 0.9275 0.4689 0.258064516129032 0.9601 0.9492 0.9254 0.8405 0.7726 0.3843 0.290322580645161 0.8971 0.886 0.8404 0.7428 0.6743 0.373 0.32258064516129 0.6732 0.6653 0.6337 0.5859 0.5661 0.3357 0.354838709677419 0.6635 0.6555 0.6228 0.5656 0.5192 0.3293 0.387096774193548 0.6487 0.6416 0.6127 0.5525 0.5099 0.312 0.419354838709677 0.6029 0.5956 0.5663 0.5055 0.464 0.3073

# 15 0.451612903225806 0.5947 0.5881 0.5613 0.5046 0.4628 0.2863 0.483870967741936 0.5885 0.5822 0.5565 0.5012 0.461 0.2725 0.516129032258065 0.5419 0.5358 0.5108 0.4582 0.4207 0.2294 0.548387096774194 0.4776 0.472 0.4512 0.4138 0.3828 0.21 0.580645161290323 0.4079 0.4029 0.3827 0.3646 0.3444 0.1945 0.612903225806452 0.4074 0.4025 0.3817 0.3406 0.3177 0.1597 0.645161290322581 0.3751 0.3707 0.3528 0.315 0.2883 0.1592 0.67741935483871 0.3696 0.3655 0.3487 0.3131 0.2875 0.1549 0.709677419354839 0.3623 0.358 0.3404 0.3045 0.2799 0.1518 0.741935483870968 0.361 0.3565 0.3384 0.3013 0.2767 0.1498 0.774193548387097 0.3522 0.348 0.331 0.2949 0.2759 0.1474 0.806451612903226 0.3518 0.3475 0.33 0.2947 0.271 0.1452 0.838709677419355 0.343 0.339 0.324 0.2905 0.27 0.1416 0.870967741935484 0.3393 0.335 0.3178 0.2902 0.2692 0.1413 0.903225806451613 0.3345 0.3303 0.313 0.2902 0.2664 0.141 0.935483870967742 0.333 0.3287 0.3118 0.2782 0.254 0.1292 0.967741935483871 0.3324 0.3283 0.3115 0.2777 0.2537 0.1291

0.1 2.1242 2.0983 2.0014 1.8276 1.6828 0.8054 Average of yearly averages: 0.333586666666667

Inputs generated by pe5.pl - Novemeber 2006

Data used for this run: Output File: 3Cacot Metfile: w93193.dvf PRZM scenario: CAcotton_WirrigSTD.txt EXAMS environment file: ir298.exv Chemical Name: pyroxasulfone Description Variable Name Value Units Comments Molecular weight mwt 367 g/mol Henry's Law Const. henry 2.65E-9 atm-m^3/mol Vapor Pressure vapr 1.8E-8 torr Solubility sol 3.49 mg/L Kd Kd mg/L Koc Koc 94.75 mg/L Photolysis half-life kdp days Half-life Aerobic Aquatic Metabolism kbacw 270 days Halfife Anaerobic Aquatic Metabolism kbacs 157 days Halfife Aerobic Soil Metabolism asm 1055 days Halfife Hydrolysis: pH 7 days Half-life Method: CAM 2 integer See PRZM manual Incorporation Depth: DEPI cm Application Rate: TAPP 0.1249 kg/ha Application Efficiency: APPEFF 0.99 fraction Spray Drift DRFT 0.064 fraction of application rate applied to pond Application Date Date 1-4 dd/mm or dd/mmm or dd-mm or dd-mmm Record 17: FILTRA IPSCND 1

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)

Preplant, Ground, 2 applications stored as 4Cacot.out Chemical: pyroxasulfone PRZM environment: CAcotton_WirrigSTD.txt modified Tueday, 29 May 2007 at 12:42:12 EXAMS environment: ir298.exv modified Tueday, 26 August 2008 at 05:14:08 Metfile: w93193.dvf modified Tueday, 26 August 2008 at 05:16:12 Water segment concentrations (ppb)

Year Peak 96 hr 21 Day 60 Day 90 Day Yearly 1961 0.8403 0.8299 0.7879 0.7008 0.6441 0.3071 1962 0.6731 0.6649 0.6317 0.5646 0.5172 0.2895 1963 2.867 2.834 2.74 2.486 2.309 1.138 1964 1.016 1.005 0.9589 0.8617 0.8123 0.5286 1965 0.8123 0.8027 0.7638 0.6814 0.6288 0.3541 1966 0.6703 0.662 0.6283 0.5578 0.5103 0.2844

# 16 1967 3.741 3.699 3.536 3.144 2.871 1.358 1968 1.932 1.91 1.818 1.695 1.573 0.9032 1969 2.459 2.43 2.312 2.137 1.971 1.015 1970 0.8898 0.8801 0.84 0.7497 0.7006 0.4454 1971 4.446 4.393 4.175 3.721 3.402 1.601 1972 1.149 1.137 1.085 0.9826 0.9212 0.6391 1973 0.7212 0.7128 0.6783 0.6023 0.5538 0.3207 1974 0.8957 0.8851 0.8421 0.7488 0.7003 0.3658 1975 0.6783 0.6707 0.6397 0.5704 0.5222 0.2941 1976 0.6556 0.648 0.6172 0.5495 0.5031 0.2772 1977 0.6486 0.6405 0.6079 0.5642 0.5199 0.2819 1978 2.164 2.138 2.086 1.928 1.782 0.8645 1979 0.8484 0.8385 0.7985 0.7113 0.6626 0.4123 1980 0.6683 0.6603 0.6279 0.5603 0.5134 0.2838 1981 1.823 1.8 1.707 1.508 1.369 0.6566 1982 1.062 1.05 1 0.8944 0.8266 0.4732 1983 0.8184 0.8084 0.7661 0.7048 0.6544 0.3658 1984 0.6715 0.6635 0.6309 0.558 0.5098 0.2781 1985 0.6395 0.6314 0.5986 0.5311 0.483 0.2573 1986 0.6374 0.6297 0.5982 0.5303 0.4829 0.2571 1987 0.639 0.6306 0.5969 0.5796 0.5432 0.2952 1988 5.73 5.661 5.451 4.85 4.423 2.041 1989 1.447 1.43 1.359 1.264 1.2 0.8478 1990 2.507 2.475 2.346 2.079 1.893 0.9516

Sorted results Prob. Peak 96 hr 21 Day 60 Day 90 Day Yearly 0.032258064516129 5.73 5.661 5.451 4.85 4.423 2.041 0.0645161290322581 4.446 4.393 4.175 3.721 3.402 1.601 0.0967741935483871 3.741 3.699 3.536 3.144 2.871 1.358 0.129032258064516 2.867 2.834 2.74 2.486 2.309 1.138 0.161290322580645 2.507 2.475 2.346 2.137 1.971 1.015 0.193548387096774 2.459 2.43 2.312 2.079 1.893 0.9516 0.225806451612903 2.164 2.138 2.086 1.928 1.782 0.9032 0.258064516129032 1.932 1.91 1.818 1.695 1.573 0.8645 0.290322580645161 1.823 1.8 1.707 1.508 1.369 0.8478 0.32258064516129 1.447 1.43 1.359 1.264 1.2 0.6566 0.354838709677419 1.149 1.137 1.085 0.9826 0.9212 0.6391 0.387096774193548 1.062 1.05 1 0.8944 0.8266 0.5286 0.419354838709677 1.016 1.005 0.9589 0.8617 0.8123 0.4732 0.451612903225806 0.8957 0.8851 0.8421 0.7497 0.7006 0.4454 0.483870967741936 0.8898 0.8801 0.84 0.7488 0.7003 0.4123 0.516129032258065 0.8484 0.8385 0.7985 0.7113 0.6626 0.3658 0.548387096774194 0.8403 0.8299 0.7879 0.7048 0.6544 0.3658 0.580645161290323 0.8184 0.8084 0.7661 0.7008 0.6441 0.3541 0.612903225806452 0.8123 0.8027 0.7638 0.6814 0.6288 0.3207 0.645161290322581 0.7212 0.7128 0.6783 0.6023 0.5538 0.3071 0.67741935483871 0.6783 0.6707 0.6397 0.5796 0.5432 0.2952 0.709677419354839 0.6731 0.6649 0.6317 0.5704 0.5222 0.2941 0.741935483870968 0.6715 0.6635 0.6309 0.5646 0.5199 0.2895 0.774193548387097 0.6703 0.662 0.6283 0.5642 0.5172 0.2844 0.806451612903226 0.6683 0.6603 0.6279 0.5603 0.5134 0.2838 0.838709677419355 0.6556 0.648 0.6172 0.558 0.5103 0.2819 0.870967741935484 0.6486 0.6405 0.6079 0.5578 0.5098 0.2781 0.903225806451613 0.6395 0.6314 0.5986 0.5495 0.5031 0.2772 0.935483870967742 0.639 0.6306 0.5982 0.5311 0.483 0.2573 0.967741935483871 0.6374 0.6297 0.5969 0.5303 0.4829 0.2571

0.1 3.6536 3.6125 3.4564 3.0782 2.8148 1.336 Average of yearly averages: 0.612913333333333

Inputs generated by pe5.pl - Novemeber 2006

Data used for this run: Output File: 4Cacot Metfile: w93193.dvf PRZM scenario: CAcotton_WirrigSTD.txt EXAMS environment file: ir298.exv Chemical Name: pyroxasulfone Description Variable Name Value Units Comments Molecular weight mwt 367 g/mol

# 17 Henry's Law Const. henry 2.65E-9 atm-m^3/mol Vapor Pressure vapr 1.8E-8 torr Solubility sol 3.49 mg/L Kd Kd mg/L Koc Koc 94.75 mg/L Photolysis half-life kdp days Half-life Aerobic Aquatic Metabolism kbacw 270 days Halfife Anaerobic Aquatic Metabolism kbacs 157 days Halfife Aerobic Soil Metabolism asm 1055 days Halfife Hydrolysis: pH 7 days Half-life Method: CAM 2 integer See PRZM manual Incorporation Depth: DEPI cm Application Rate: TAPP 0.1249 kg/ha Application Efficiency: APPEFF 0.99 fraction Spray Drift DRFT 0.064 fraction of application rate applied to pond Application Date Date 1-4 dd/mm or dd/mmm or dd-mm or dd-mmm Interval 1 interval 14 days Set to 0 or delete line for single app. app. rate 1 apprate 0.1249 kg/ha Record 17: FILTRA IPSCND 1

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)

Post Plant, Ground, 1 application stored as 5Cacot.out Chemical: pyroxasulfone PRZM environment: CAcotton_WirrigSTD.txt modified Tueday, 29 May 2007 at 12:42:12 EXAMS environment: ir298.exv modified Tueday, 26 August 2008 at 05:14:08 Metfile: w93193.dvf modified Tueday, 26 August 2008 at 05:16:12 Water segment concentrations (ppb)

Year Peak 96 hr 21 Day 60 Day 90 Day Yearly 1961 0.3014 0.2979 0.2896 0.2637 0.2404 0.12 1962 0.3923 0.3875 0.376 0.3345 0.3045 0.1909 1963 0.3635 0.3591 0.3497 0.3138 0.2868 0.1764 1964 0.3742 0.3695 0.3554 0.3193 0.2914 0.1936 1965 0.3954 0.3904 0.3755 0.3348 0.3054 0.1936 1966 0.3611 0.3563 0.3457 0.3101 0.283 0.1624 1967 0.3533 0.3487 0.3362 0.3053 0.2782 0.1579 1968 0.374 0.37 0.3548 0.3334 0.3035 0.2064 1969 0.4373 0.4317 0.4193 0.3771 0.3445 0.2289 1970 0.3664 0.3616 0.3515 0.3148 0.2864 0.1775 1971 0.4401 0.4348 0.4152 0.3841 0.3522 0.2165 1972 0.3566 0.352 0.3363 0.3218 0.2968 0.1729 1973 0.3673 0.3623 0.3483 0.3074 0.2792 0.1795 1974 0.3765 0.3725 0.3645 0.3246 0.2952 0.1997 1975 0.4138 0.4085 0.3916 0.3478 0.3171 0.2211 1976 0.3983 0.3932 0.38 0.3454 0.317 0.2184 1977 0.3865 0.3818 0.3726 0.3319 0.3017 0.1854 1978 0.3868 0.3818 0.3659 0.3234 0.2992 0.2261 1979 0.4017 0.3964 0.3824 0.3384 0.3105 0.2013 1980 0.3675 0.3629 0.3537 0.3153 0.2865 0.1634 1981 0.3499 0.3453 0.3306 0.2897 0.2615 0.146 1982 0.3482 0.3437 0.3291 0.2946 0.2718 0.1797 1983 0.3931 0.3888 0.3798 0.3382 0.3082 0.2002 1984 0.3689 0.3645 0.3573 0.3239 0.294 0.1714 1985 0.3533 0.3486 0.3408 0.305 0.2762 0.1662 1986 0.3671 0.3623 0.3546 0.3143 0.2851 0.172 1987 1.958 1.931 1.826 1.599 1.452 0.6774 1988 0.5428 0.5368 0.5247 0.4694 0.4267 0.3217 1989 0.3906 0.386 0.3717 0.329 0.2986 0.2033 1990 0.5824 0.5752 0.5443 0.4763 0.4381 0.2414

Sorted results Prob. Peak 96 hr 21 Day 60 Day 90 Day Yearly 0.032258064516129 1.958 1.931 1.826 1.599 1.452 0.6774 0.0645161290322581 0.5824 0.5752 0.5443 0.4763 0.4381 0.3217

# 18 0.0967741935483871 0.5428 0.5368 0.5247 0.4694 0.4267 0.2414 0.129032258064516 0.4401 0.4348 0.4193 0.3841 0.3522 0.2289 0.161290322580645 0.4373 0.4317 0.4152 0.3771 0.3445 0.2261 0.193548387096774 0.4138 0.4085 0.3916 0.3478 0.3171 0.2211 0.225806451612903 0.4017 0.3964 0.3824 0.3454 0.317 0.2184 0.258064516129032 0.3983 0.3932 0.38 0.3384 0.3105 0.2165 0.290322580645161 0.3954 0.3904 0.3798 0.3382 0.3082 0.2064 0.32258064516129 0.3931 0.3888 0.376 0.3348 0.3054 0.2033 0.354838709677419 0.3923 0.3875 0.3755 0.3345 0.3045 0.2013 0.387096774193548 0.3906 0.386 0.3726 0.3334 0.3035 0.2002 0.419354838709677 0.3868 0.3818 0.3717 0.3319 0.3017 0.1997 0.451612903225806 0.3865 0.3818 0.3659 0.329 0.2992 0.1936 0.483870967741936 0.3765 0.3725 0.3645 0.3246 0.2986 0.1936 0.516129032258065 0.3742 0.37 0.3573 0.3239 0.2968 0.1909 0.548387096774194 0.374 0.3695 0.3554 0.3234 0.2952 0.1854 0.580645161290323 0.3689 0.3645 0.3548 0.3218 0.294 0.1797 0.612903225806452 0.3675 0.3629 0.3546 0.3193 0.2914 0.1795 0.645161290322581 0.3673 0.3623 0.3537 0.3153 0.2868 0.1775 0.67741935483871 0.3671 0.3623 0.3515 0.3148 0.2865 0.1764 0.709677419354839 0.3664 0.3616 0.3497 0.3143 0.2864 0.1729 0.741935483870968 0.3635 0.3591 0.3483 0.3138 0.2851 0.172 0.774193548387097 0.3611 0.3563 0.3457 0.3101 0.283 0.1714 0.806451612903226 0.3566 0.352 0.3408 0.3074 0.2792 0.1662 0.838709677419355 0.3533 0.3487 0.3363 0.3053 0.2782 0.1634 0.870967741935484 0.3533 0.3486 0.3362 0.305 0.2762 0.1624 0.903225806451613 0.3499 0.3453 0.3306 0.2946 0.2718 0.1579 0.935483870967742 0.3482 0.3437 0.3291 0.2897 0.2615 0.146 0.967741935483871 0.3014 0.2979 0.2896 0.2637 0.2404 0.12

0.1 0.53253 0.5266 0.51416 0.46087 0.41925 0.24015 Average of yearly averages: 0.20904

Inputs generated by pe5.pl - Novemeber 2006

Data used for this run: Output File: 5Cacot Metfile: w93193.dvf PRZM scenario: CAcotton_WirrigSTD.txt EXAMS environment file: ir298.exv Chemical Name: pyroxasulfone Description Variable Name Value Units Comments Molecular weight mwt 367 g/mol Henry's Law Const. henry 2.65E-9 atm-m^3/mol Vapor Pressure vapr 1.8E-8 torr Solubility sol 3.49 mg/L Kd Kd mg/L Koc Koc 94.75 mg/L Photolysis half-life kdp days Half-life Aerobic Aquatic Metabolism kbacw 270 days Halfife Anaerobic Aquatic Metabolism kbacs 157 days Halfife Aerobic Soil Metabolism asm 1055 days Halfife Hydrolysis: pH 7 days Half-life Method: CAM 2 integer See PRZM manual Incorporation Depth: DEPI cm Application Rate: TAPP 0.1249 kg/ha Application Efficiency: APPEFF 0.99 fraction Spray Drift DRFT 0.064 fraction of application rate applied to pond Application Date Date 15-5 dd/mm or dd/mmm or dd-mm or dd-mmm Record 17: FILTRA IPSCND 1

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)

Post Plant, Ground, 2 applications stored as 6Cacot.out Chemical: pyroxasulfone PRZM environment: CAcotton_WirrigSTD.txt modified Tueday, 29 May 2007 at 12:42:12

# 19 EXAMS environment: ir298.exv modified Tueday, 26 August 2008 at 05:14:08 Metfile: w93193.dvf modified Tueday, 26 August 2008 at 05:16:12 Water segment concentrations (ppb)

Year Peak 96 hr 21 Day 60 Day 90 Day Yearly 1961 1.025 1.014 0.9705 0.8551 0.7799 0.3948 1962 1.278 1.268 1.214 1.077 0.9797 0.6381 1963 1.099 1.088 1.049 0.9384 0.8576 0.5522 1964 1.017 1.009 0.9793 0.8744 0.7972 0.5639 1965 1.176 1.162 1.12 1.001 0.9146 0.5908 1966 1.33 1.316 1.275 1.129 1.027 0.5814 1967 1.101 1.088 1.051 0.9391 0.8539 0.5181 1968 1.157 1.144 1.098 1.035 0.9468 0.6473 1969 1.252 1.244 1.202 1.076 0.9824 0.6885 1970 1.059 1.05 1.014 0.9006 0.8194 0.5295 1971 1.212 1.197 1.157 1.035 0.9444 0.6153 1972 1.199 1.186 1.134 1.023 0.9348 0.5442 1973 1.039 1.026 0.9848 0.8743 0.796 0.5473 1974 1.059 1.047 1.005 0.8904 0.811 0.5809 1975 1.213 1.205 1.151 1.023 0.9329 0.6665 1976 1.102 1.094 1.068 0.9648 0.8863 0.6421 1977 1.202 1.189 1.141 1.01 0.9165 0.5739 1978 1.137 1.122 1.096 0.9871 0.919 0.6911 1979 1.119 1.11 1.062 0.9451 0.8709 0.5939 1980 1.011 1.003 0.9639 0.8563 0.7782 0.4684 1981 1.101 1.093 1.039 0.9096 0.8215 0.4632 1982 0.9455 0.9374 0.9027 0.8183 0.7521 0.5284 1983 1.141 1.127 1.084 0.9649 0.8794 0.5922 1984 1.125 1.114 1.081 0.9543 0.8622 0.519 1985 1.072 1.061 1.019 0.8935 0.8079 0.5045 1986 1.1 1.091 1.042 0.9178 0.8313 0.5211 1987 2.488 2.47 2.366 2.154 1.994 1.038 1988 1.46 1.447 1.397 1.234 1.119 0.7065 1989 1.059 1.049 1.005 0.8896 0.8089 0.5781 1990 1.193 1.184 1.134 1.011 0.9188 0.5545

Sorted results Prob. Peak 96 hr 21 Day 60 Day 90 Day Yearly 0.032258064516129 2.488 2.47 2.366 2.154 1.994 1.038 0.0645161290322581 1.46 1.447 1.397 1.234 1.119 0.7065 0.0967741935483871 1.33 1.316 1.275 1.129 1.027 0.6911 0.129032258064516 1.278 1.268 1.214 1.077 0.9824 0.6885 0.161290322580645 1.252 1.244 1.202 1.076 0.9797 0.6665 0.193548387096774 1.213 1.205 1.157 1.035 0.9468 0.6473 0.225806451612903 1.212 1.197 1.151 1.035 0.9444 0.6421 0.258064516129032 1.202 1.189 1.141 1.023 0.9348 0.6381 0.290322580645161 1.199 1.186 1.134 1.023 0.9329 0.6153 0.32258064516129 1.193 1.184 1.134 1.011 0.919 0.5939 0.354838709677419 1.176 1.162 1.12 1.01 0.9188 0.5922 0.387096774193548 1.157 1.144 1.098 1.001 0.9165 0.5908 0.419354838709677 1.141 1.127 1.096 0.9871 0.9146 0.5814 0.451612903225806 1.137 1.122 1.084 0.9649 0.8863 0.5809 0.483870967741936 1.125 1.114 1.081 0.9648 0.8794 0.5781 0.516129032258065 1.119 1.11 1.068 0.9543 0.8709 0.5739 0.548387096774194 1.102 1.094 1.062 0.9451 0.8622 0.5639 0.580645161290323 1.101 1.093 1.051 0.9391 0.8576 0.5545 0.612903225806452 1.101 1.091 1.049 0.9384 0.8539 0.5522 0.645161290322581 1.1 1.088 1.042 0.9178 0.8313 0.5473 0.67741935483871 1.099 1.088 1.039 0.9096 0.8215 0.5442 0.709677419354839 1.072 1.061 1.019 0.9006 0.8194 0.5295 0.741935483870968 1.059 1.05 1.014 0.8935 0.811 0.5284 0.774193548387097 1.059 1.049 1.005 0.8904 0.8089 0.5211 0.806451612903226 1.059 1.047 1.005 0.8896 0.8079 0.519 0.838709677419355 1.039 1.026 0.9848 0.8744 0.7972 0.5181 0.870967741935484 1.025 1.014 0.9793 0.8743 0.796 0.5045 0.903225806451613 1.017 1.009 0.9705 0.8563 0.7799 0.4684 0.935483870967742 1.011 1.003 0.9639 0.8551 0.7782 0.4632 0.967741935483871 0.9455 0.9374 0.9027 0.8183 0.7521 0.3948

0.1 1.3248 1.3112 1.2689 1.1238 1.02254 0.69084 Average of yearly averages: 0.58779

# 20 Inputs generated by pe5.pl - Novemeber 2006

Data used for this run: Output File: 6Cacot Metfile: w93193.dvf PRZM scenario: CAcotton_WirrigSTD.txt EXAMS environment file: ir298.exv Chemical Name: pyroxasulfone Description Variable Name Value Units Comments Molecular weight mwt 367 g/mol Henry's Law Const. henry 2.65E-9 atm-m^3/mol Vapor Pressure vapr 1.8E-8 torr Solubility sol 3.49 mg/L Kd Kd mg/L Koc Koc 94.75 mg/L Photolysis half-life kdp days Half-life Aerobic Aquatic Metabolism kbacw 270 days Halfife Anaerobic Aquatic Metabolism kbacs 157 days Halfife Aerobic Soil Metabolism asm 1055 days Halfife Hydrolysis: pH 7 days Half-life Method: CAM 2 integer See PRZM manual Incorporation Depth: DEPI cm Application Rate: TAPP 0.1249 kg/ha Application Efficiency: APPEFF 0.99 fraction Spray Drift DRFT 0.064 fraction of application rate applied to pond Application Date Date 15-5 dd/mm or dd/mmm or dd-mm or dd-mmm Interval 1 interval 14 days Set to 0 or delete line for single app. app. rate 1 apprate 0.1249 kg/ha Record 17: FILTRA IPSCND 1

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)

Fall, Ground stored as 7Cacot.out Chemical: pyroxasulfone PRZM environment: CAcotton_WirrigSTD.txt modified Tueday, 29 May 2007 at 12:42:12 EXAMS environment: ir298.exv modified Tueday, 26 August 2008 at 05:14:08 Metfile: w93193.dvf modified Tueday, 26 August 2008 at 05:16:12 Water segment concentrations (ppb)

Year Peak 96 hr 21 Day 60 Day 90 Day Yearly 1961 2.293 2.267 2.209 1.56 1.095 0.2701 1962 1.937 1.917 1.838 1.675 1.562 0.9009 1963 1.026 1.015 0.9813 0.902 0.7269 0.445 1964 2.086 2.059 2.01 1.849 1.395 0.676 1965 1.557 1.541 1.478 1.347 1.257 0.7669 1966 0.5793 0.5739 0.5518 0.5055 0.4728 0.3383 1967 0.9769 0.9656 0.9359 0.733 0.5748 0.3347 1968 2.288 2.262 2.188 1.987 1.45 0.674 1969 1.736 1.719 1.648 1.503 1.403 0.8396 1970 1.918 1.896 1.817 1.214 0.9084 0.4917 1971 1.62 1.604 1.536 1.397 1.302 0.7669 1972 1.903 1.882 1.815 1.555 1.141 0.4645 1973 1.479 1.464 1.404 1.278 1.192 0.7378 1974 2.194 2.166 2.063 1.981 1.497 0.6132 1975 1.816 1.798 1.729 1.578 1.473 1 1976 1.287 1.275 1.228 1.121 1.096 0.7462 1977 1.381 1.366 1.089 0.7162 0.6308 0.4553 1978 1.279 1.265 1.209 1.095 1.017 0.6385 1979 0.8851 0.8753 0.8358 0.7563 0.6222 0.4189 1980 0.7012 0.6941 0.6669 0.6076 0.5666 0.3601 1981 0.6437 0.636 0.6066 0.5513 0.4569 0.2817 1982 2.029 2.006 1.929 1.765 1.328 0.5133 1983 1.631 1.615 1.549 1.41 1.313 0.836 1984 0.8563 0.8478 0.8133 0.7417 0.6918 0.4769

# 21 1985 1.859 1.84 1.775 1.602 1.279 0.553 1986 1.621 1.603 1.368 1.242 1.155 0.72 1987 1.552 1.537 1.482 1.348 1.254 0.7234 1988 0.8932 0.883 0.8419 0.7056 0.5523 0.3041 1989 0.8199 0.8109 0.7759 0.7195 0.6022 0.4299 1990 0.9042 0.8955 0.8596 0.784 0.7388 0.4579

Sorted results Prob. Peak 96 hr 21 Day 60 Day 90 Day Yearly 0.032258064516129 2.293 2.267 2.209 1.987 1.562 1 0.0645161290322581 2.288 2.262 2.188 1.981 1.497 0.9009 0.0967741935483871 2.194 2.166 2.063 1.849 1.473 0.8396 0.129032258064516 2.086 2.059 2.01 1.765 1.45 0.836 0.161290322580645 2.029 2.006 1.929 1.675 1.403 0.7669 0.193548387096774 1.937 1.917 1.838 1.602 1.395 0.7669 0.225806451612903 1.918 1.896 1.817 1.578 1.328 0.7462 0.258064516129032 1.903 1.882 1.815 1.56 1.313 0.7378 0.290322580645161 1.859 1.84 1.775 1.555 1.302 0.7234 0.32258064516129 1.816 1.798 1.729 1.503 1.279 0.72 0.354838709677419 1.736 1.719 1.648 1.41 1.257 0.676 0.387096774193548 1.631 1.615 1.549 1.397 1.254 0.674 0.419354838709677 1.621 1.604 1.536 1.348 1.192 0.6385 0.451612903225806 1.62 1.603 1.482 1.347 1.155 0.6132 0.483870967741936 1.557 1.541 1.478 1.278 1.141 0.553 0.516129032258065 1.552 1.537 1.404 1.242 1.096 0.5133 0.548387096774194 1.479 1.464 1.368 1.214 1.095 0.4917 0.580645161290323 1.381 1.366 1.228 1.121 1.017 0.4769 0.612903225806452 1.287 1.275 1.209 1.095 0.9084 0.4645 0.645161290322581 1.279 1.265 1.089 0.902 0.7388 0.4579 0.67741935483871 1.026 1.015 0.9813 0.784 0.7269 0.4553 0.709677419354839 0.9769 0.9656 0.9359 0.7563 0.6918 0.445 0.741935483870968 0.9042 0.8955 0.8596 0.7417 0.6308 0.4299 0.774193548387097 0.8932 0.883 0.8419 0.733 0.6222 0.4189 0.806451612903226 0.8851 0.8753 0.8358 0.7195 0.6022 0.3601 0.838709677419355 0.8563 0.8478 0.8133 0.7162 0.5748 0.3383 0.870967741935484 0.8199 0.8109 0.7759 0.7056 0.5666 0.3347 0.903225806451613 0.7012 0.6941 0.6669 0.6076 0.5523 0.3041 0.935483870967742 0.6437 0.636 0.6066 0.5513 0.4728 0.2817 0.967741935483871 0.5793 0.5739 0.5518 0.5055 0.4569 0.2701

0.1 2.1832 2.1553 2.0577 1.8406 1.4707 0.83924 Average of yearly averages: 0.574493333333333

Inputs generated by pe5.pl - Novemeber 2006

Data used for this run: Output File: 7Cacot Metfile: w93193.dvf PRZM scenario: CAcotton_WirrigSTD.txt EXAMS environment file: ir298.exv Chemical Name: pyroxasulfone Description Variable Name Value Units Comments Molecular weight mwt 367 g/mol Henry's Law Const. henry 2.65E-9 atm-m^3/mol Vapor Pressure vapr 1.8E-8 torr Solubility sol 3.49 mg/L Kd Kd mg/L Koc Koc 94.75 mg/L Photolysis half-life kdp days Half-life Aerobic Aquatic Metabolism kbacw 270 days Halfife Anaerobic Aquatic Metabolism kbacs 157 days Halfife Aerobic Soil Metabolism asm 1055 days Halfife Hydrolysis: pH 7 days Half-life Method: CAM 2 integer See PRZM manual Incorporation Depth: DEPI cm Application Rate: TAPP 0.1249 kg/ha Application Efficiency: APPEFF 0.99 fraction Spray Drift DRFT 0.064 fraction of application rate applied to pond Application Date Date 15-10 dd/mm or dd/mmm or dd-mm or dd-mmm Record 17: FILTRA IPSCND 1

# 22 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)

Fall, Aerial stored as CAcot8.out Chemical: pyroxasulfone PRZM environment: CAcotton_WirrigSTD.txt modified Tueday, 29 May 2007 at 12:42:12 EXAMS environment: ir298.exv modified Tueday, 26 August 2008 at 05:14:08 Metfile: w93193.dvf modified Tueday, 26 August 2008 at 05:16:12 Water segment concentrations (ppb)

Year Peak 96 hr 21 Day 60 Day 90 Day Yearly 1961 1.639 1.62 1.577 1.139 0.8164 0.2013 1962 1.382 1.369 1.312 1.196 1.115 0.6598 1963 0.7946 0.786 0.7612 0.7048 0.5802 0.3549 1964 1.526 1.506 1.468 1.349 1.033 0.5124 1965 1.135 1.124 1.078 0.9826 0.9169 0.5736 1966 0.4726 0.4682 0.4551 0.4278 0.3855 0.2828 1967 0.7608 0.752 0.7275 0.5893 0.4763 0.2802 1968 1.66 1.641 1.586 1.441 1.07 0.5102 1969 1.258 1.245 1.194 1.089 1.017 0.6234 1970 1.395 1.379 1.321 0.9162 0.7031 0.387 1971 1.179 1.166 1.117 1.017 0.9479 0.574 1972 1.392 1.377 1.329 1.148 0.8613 0.3686 1973 1.083 1.073 1.028 0.9365 0.8737 0.554 1974 1.6 1.58 1.505 1.439 1.102 0.4692 1975 1.311 1.299 1.249 1.14 1.064 0.7327 1976 0.941 0.9321 0.8979 0.8243 0.8086 0.5605 1977 1.022 1.01 0.8217 0.5778 0.4929 0.3622 1978 0.9458 0.9356 0.8943 0.8101 0.7527 0.4854 1979 0.6989 0.6912 0.6601 0.6049 0.5078 0.3366 1980 0.5539 0.5483 0.5267 0.4798 0.4475 0.2967 1981 0.5473 0.5408 0.5158 0.4681 0.3958 0.2434 1982 1.476 1.459 1.403 1.291 0.9879 0.4014 1983 1.186 1.174 1.126 1.025 0.9552 0.6202 1984 0.6588 0.6523 0.6257 0.5707 0.5323 0.3753 1985 1.363 1.349 1.301 1.179 0.9538 0.4273 1986 1.182 1.169 1.003 0.9101 0.8465 0.5403 1987 1.13 1.119 1.08 0.9818 0.9136 0.5428 1988 0.7066 0.6986 0.6662 0.5701 0.4604 0.2587 1989 0.651 0.6438 0.6161 0.5829 0.4947 0.3442 1990 0.6874 0.6808 0.6539 0.5965 0.5652 0.3634

Sorted results Prob. Peak 96 hr 21 Day 60 Day 90 Day Yearly 0.032258064516129 1.66 1.641 1.586 1.441 1.115 0.7327 0.0645161290322581 1.639 1.62 1.577 1.439 1.102 0.6598 0.0967741935483871 1.6 1.58 1.505 1.349 1.07 0.6234 0.129032258064516 1.526 1.506 1.468 1.291 1.064 0.6202 0.161290322580645 1.476 1.459 1.403 1.196 1.033 0.574 0.193548387096774 1.395 1.379 1.329 1.179 1.017 0.5736 0.225806451612903 1.392 1.377 1.321 1.148 0.9879 0.5605 0.258064516129032 1.382 1.369 1.312 1.14 0.9552 0.554 0.290322580645161 1.363 1.349 1.301 1.139 0.9538 0.5428 0.32258064516129 1.311 1.299 1.249 1.089 0.9479 0.5403 0.354838709677419 1.258 1.245 1.194 1.025 0.9169 0.5124 0.387096774193548 1.186 1.174 1.126 1.017 0.9136 0.5102 0.419354838709677 1.182 1.169 1.117 0.9826 0.8737 0.4854 0.451612903225806 1.179 1.166 1.08 0.9818 0.8613 0.4692 0.483870967741936 1.135 1.124 1.078 0.9365 0.8465 0.4273 0.516129032258065 1.13 1.119 1.028 0.9162 0.8164 0.4014 0.548387096774194 1.083 1.073 1.003 0.9101 0.8086 0.387 0.580645161290323 1.022 1.01 0.8979 0.8243 0.7527 0.3753 0.612903225806452 0.9458 0.9356 0.8943 0.8101 0.7031 0.3686 0.645161290322581 0.941 0.9321 0.8217 0.7048 0.5802 0.3634 0.67741935483871 0.7946 0.786 0.7612 0.6049 0.5652 0.3622 0.709677419354839 0.7608 0.752 0.7275 0.5965 0.5323 0.3549

# 23 0.741935483870968 0.7066 0.6986 0.6662 0.5893 0.5078 0.3442 0.774193548387097 0.6989 0.6912 0.6601 0.5829 0.4947 0.3366 0.806451612903226 0.6874 0.6808 0.6539 0.5778 0.4929 0.2967 0.838709677419355 0.6588 0.6523 0.6257 0.5707 0.4763 0.2828 0.870967741935484 0.651 0.6438 0.6161 0.5701 0.4604 0.2802 0.903225806451613 0.5539 0.5483 0.5267 0.4798 0.4475 0.2587 0.935483870967742 0.5473 0.5408 0.5158 0.4681 0.3958 0.2434 0.967741935483871 0.4726 0.4682 0.4551 0.4278 0.3855 0.2013

0.1 1.5926 1.5726 1.5013 1.3432 1.0694 0.62308 Average of yearly averages: 0.441416666666667

Inputs generated by pe5.pl - Novemeber 2006

Data used for this run: Output File: CAcot8 Metfile: w93193.dvf PRZM scenario: CAcotton_WirrigSTD.txt EXAMS environment file: ir298.exv Chemical Name: pyroxasulfone Description Variable Name Value Units Comments Molecular weight mwt 367 g/mol Henry's Law Const. henry 2.65E-9 atm-m^3/mol Vapor Pressure vapr 1.8E-8 torr Solubility sol 3.49 mg/L Kd Kd mg/L Koc Koc 94.75 mg/L Photolysis half-life kdp days Half-life Aerobic Aquatic Metabolism kbacw 270 days Halfife Anaerobic Aquatic Metabolism kbacs 157 days Halfife Aerobic Soil Metabolism asm 1055 days Halfife Hydrolysis: pH 7 days Half-life Method: CAM 2 integer See PRZM manual Incorporation Depth: DEPI cm Application Rate: TAPP 0.0883 kg/ha Application Efficiency: APPEFF 0.95 fraction Spray Drift DRFT 0.094 fraction of application rate applied to pond Application Date Date 15-10 dd/mm or dd/mmm or dd-mm or dd-mmm Record 17: FILTRA IPSCND 1

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)

NC Cotton

Pre-emergent, Aerial stored as 1NCcot.out Chemical: pyroxasulfone PRZM environment: NCcottonSTD.txt modified Tueday, 29 May 2007 at 12:58:38 EXAMS environment: ir298.exv modified Tueday, 26 August 2008 at 05:14:08 Metfile: w13722.dvf modified Tueday, 26 August 2008 at 05:14:28 Water segment concentrations (ppb)

Year Peak 96 hr 21 Day 60 Day 90 Day Yearly 1961 0.7374 0.7227 0.6639 0.5525 0.4922 0.1971 1962 1.555 1.518 1.418 1.223 1.096 0.4357 1963 4.087 4.027 3.66 3.112 2.705 1.023 1964 0.8887 0.8672 0.7837 0.7036 0.6488 0.3546 1965 4.005 3.911 3.666 3.037 2.645 1.026 1966 4.067 4.004 3.698 3.35 2.979 1.219 1967 2.843 2.776 2.571 2.132 1.908 0.8673 1968 2.757 2.701 2.483 2.115 1.859 0.7653 1969 1.97 1.923 1.774 1.557 1.384 0.5845 1970 1.312 1.283 1.249 1.076 0.9374 0.4237 1971 2.315 2.263 2.05 1.844 1.657 0.6737 1972 2.489 2.431 2.256 1.89 1.644 0.73 1973 2.636 2.577 2.333 2.201 1.976 0.8148

# 24 1974 2.475 2.418 2.233 1.879 1.633 0.6651 1975 2.427 2.368 2.177 1.8 1.579 0.6364 1976 1.84 1.797 1.666 1.396 1.209 0.5172 1977 3.5 3.433 3.134 2.539 2.222 0.8935 1978 1.381 1.348 1.23 1.177 1.053 0.4907 1979 1.161 1.134 1.076 0.9675 0.8786 0.385 1980 2.8 2.732 2.472 1.99 1.716 0.7401 1981 2.72 2.657 2.51 2.228 1.997 0.8306 1982 2.204 2.165 2.046 1.735 1.512 0.6257 1983 4.31 4.219 3.996 3.337 2.891 1.093 1984 4.801 4.721 4.278 3.51 3.032 1.184 1985 1.693 1.666 1.579 1.447 1.338 0.6196 1986 2.201 2.167 1.992 1.714 1.555 0.6464 1987 1.011 0.9866 0.8894 0.7207 0.6729 0.347 1988 0.5092 0.4971 0.4524 0.4122 0.3824 0.2025 1989 2.144 2.102 1.979 1.635 1.407 0.5271 1990 3.204 3.13 2.829 2.284 1.971 0.7677

Sorted results Prob. Peak 96 hr 21 Day 60 Day 90 Day Yearly 0.032258064516129 4.801 4.721 4.278 3.51 3.032 1.219 0.0645161290322581 4.31 4.219 3.996 3.35 2.979 1.184 0.0967741935483871 4.087 4.027 3.698 3.337 2.891 1.093 0.129032258064516 4.067 4.004 3.666 3.112 2.705 1.026 0.161290322580645 4.005 3.911 3.66 3.037 2.645 1.023 0.193548387096774 3.5 3.433 3.134 2.539 2.222 0.8935 0.225806451612903 3.204 3.13 2.829 2.284 1.997 0.8673 0.258064516129032 2.843 2.776 2.571 2.228 1.976 0.8306 0.290322580645161 2.8 2.732 2.51 2.201 1.971 0.8148 0.32258064516129 2.757 2.701 2.483 2.132 1.908 0.7677 0.354838709677419 2.72 2.657 2.472 2.115 1.859 0.7653 0.387096774193548 2.636 2.577 2.333 1.99 1.716 0.7401 0.419354838709677 2.489 2.431 2.256 1.89 1.657 0.73 0.451612903225806 2.475 2.418 2.233 1.879 1.644 0.6737 0.483870967741936 2.427 2.368 2.177 1.844 1.633 0.6651 0.516129032258065 2.315 2.263 2.05 1.8 1.579 0.6464 0.548387096774194 2.204 2.167 2.046 1.735 1.555 0.6364 0.580645161290323 2.201 2.165 1.992 1.714 1.512 0.6257 0.612903225806452 2.144 2.102 1.979 1.635 1.407 0.6196 0.645161290322581 1.97 1.923 1.774 1.557 1.384 0.5845 0.67741935483871 1.84 1.797 1.666 1.447 1.338 0.5271 0.709677419354839 1.693 1.666 1.579 1.396 1.209 0.5172 0.741935483870968 1.555 1.518 1.418 1.223 1.096 0.4907 0.774193548387097 1.381 1.348 1.249 1.177 1.053 0.4357 0.806451612903226 1.312 1.283 1.23 1.076 0.9374 0.4237 0.838709677419355 1.161 1.134 1.076 0.9675 0.8786 0.385 0.870967741935484 1.011 0.9866 0.8894 0.7207 0.6729 0.3546 0.903225806451613 0.8887 0.8672 0.7837 0.7036 0.6488 0.347 0.935483870967742 0.7374 0.7227 0.6639 0.5525 0.4922 0.2025 0.967741935483871 0.5092 0.4971 0.4524 0.4122 0.3824 0.1971

0.1 4.085 4.0247 3.6948 3.3145 2.8724 1.0863 Average of yearly averages: 0.67621

Inputs generated by pe5.pl - Novemeber 2006

Data used for this run: Output File: 1NCcot Metfile: w13722.dvf PRZM scenario: NCcottonSTD.txt EXAMS environment file: ir298.exv Chemical Name: pyroxasulfone Description Variable Name Value Units Comments Molecular weight mwt 367 g/mol Henry's Law Const. henry 2.65E-9 atm-m^3/mol Vapor Pressure vapr 1.8E-8 torr Solubility sol 3.49 mg/L Kd Kd mg/L Koc Koc 94.75 mg/L Photolysis half-life kdp days Half-life Aerobic Aquatic Metabolism kbacw 270 days Halfife

# 25 Anaerobic Aquatic Metabolism kbacs 157 days Halfife Aerobic Soil Metabolism asm 1055 days Halfife Hydrolysis: pH 7 days Half-life Method: CAM 2 integer See PRZM manual Incorporation Depth: DEPI cm Application Rate: TAPP 0.0883 kg/ha Application Efficiency: APPEFF 0.95 fraction Spray Drift DRFT 0.094 fraction of application rate applied to pond Application Date Date 20-5 dd/mm or dd/mmm or dd-mm or dd-mmm Record 17: FILTRA IPSCND 1

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)

Preplant. Aerial stored as 2NCcot.out Chemical: pyroxasulfone PRZM environment: NCcottonSTD.txt modified Tueday, 29 May 2007 at 12:58:38 EXAMS environment: ir298.exv modified Tueday, 26 August 2008 at 05:14:08 Metfile: w13722.dvf modified Tueday, 26 August 2008 at 05:14:28 Water segment concentrations (ppb)

Year Peak 96 hr 21 Day 60 Day 90 Day Yearly 1961 1.882 1.838 1.688 1.422 1.246 0.463 1962 1.313 1.282 1.195 1.029 0.9208 0.3981 1963 3.184 3.136 2.845 2.41 2.09 0.8017 1964 0.739 0.7213 0.6521 0.5794 0.5398 0.3042 1965 2.505 2.453 2.298 1.899 1.675 0.6724 1966 2.388 2.34 2.136 1.831 1.665 0.6988 1967 1.476 1.453 1.327 1.26 1.148 0.4957 1968 1.602 1.568 1.432 1.192 1.041 0.4378 1969 1.893 1.849 1.79 1.571 1.383 0.5565 1970 1.51 1.476 1.367 1.209 1.104 0.4823 1971 2.677 2.616 2.433 2.126 1.866 0.7325 1972 3.891 3.819 3.591 3.221 2.874 1.141 1973 1.432 1.399 1.272 1.127 0.9926 0.4769 1974 3.196 3.123 2.93 2.478 2.183 0.8524 1975 1.473 1.44 1.325 1.083 0.9516 0.4312 1976 2.173 2.123 2.033 1.74 1.507 0.6025 1977 1.994 1.961 1.782 1.442 1.25 0.5345 1978 3.147 3.082 2.921 2.474 2.175 0.8469 1979 2.092 2.045 1.937 1.689 1.507 0.6289 1980 2.324 2.268 2.056 1.938 1.787 0.7373 1981 1.858 1.814 1.761 1.498 1.319 0.5728 1982 1.572 1.545 1.454 1.231 1.071 0.4475 1983 2.292 2.243 2.101 1.734 1.495 0.59 1984 3.188 3.138 2.841 2.315 1.996 0.8009 1985 2.373 2.319 2.173 1.971 1.764 0.7306 1986 3.096 3.034 2.766 2.29 2.007 0.7999 1987 0.991 0.967 0.8727 0.7696 0.7174 0.3746 1988 1.227 1.205 1.099 0.9165 0.7944 0.333 1989 4.535 4.453 4.18 3.614 3.17 1.196 1990 3.853 3.765 3.517 3.164 2.778 1.108

Sorted results Prob. Peak 96 hr 21 Day 60 Day 90 Day Yearly 0.032258064516129 4.535 4.453 4.18 3.614 3.17 1.196 0.0645161290322581 3.891 3.819 3.591 3.221 2.874 1.141 0.0967741935483871 3.853 3.765 3.517 3.164 2.778 1.108 0.129032258064516 3.196 3.138 2.93 2.478 2.183 0.8524 0.161290322580645 3.188 3.136 2.921 2.474 2.175 0.8469 0.193548387096774 3.184 3.123 2.845 2.41 2.09 0.8017 0.225806451612903 3.147 3.082 2.841 2.315 2.007 0.8009 0.258064516129032 3.096 3.034 2.766 2.29 1.996 0.7999 0.290322580645161 2.677 2.616 2.433 2.126 1.866 0.7373 0.32258064516129 2.505 2.453 2.298 1.971 1.787 0.7325 0.354838709677419 2.388 2.34 2.173 1.938 1.764 0.7306

# 26 0.387096774193548 2.373 2.319 2.136 1.899 1.675 0.6988 0.419354838709677 2.324 2.268 2.101 1.831 1.665 0.6724 0.451612903225806 2.292 2.243 2.056 1.74 1.507 0.6289 0.483870967741936 2.173 2.123 2.033 1.734 1.507 0.6025 0.516129032258065 2.092 2.045 1.937 1.689 1.495 0.59 0.548387096774194 1.994 1.961 1.79 1.571 1.383 0.5728 0.580645161290323 1.893 1.849 1.782 1.498 1.319 0.5565 0.612903225806452 1.882 1.838 1.761 1.442 1.25 0.5345 0.645161290322581 1.858 1.814 1.688 1.422 1.246 0.4957 0.67741935483871 1.602 1.568 1.454 1.26 1.148 0.4823 0.709677419354839 1.572 1.545 1.432 1.231 1.104 0.4769 0.741935483870968 1.51 1.476 1.367 1.209 1.071 0.463 0.774193548387097 1.476 1.453 1.327 1.192 1.041 0.4475 0.806451612903226 1.473 1.44 1.325 1.127 0.9926 0.4378 0.838709677419355 1.432 1.399 1.272 1.083 0.9516 0.4312 0.870967741935484 1.313 1.282 1.195 1.029 0.9208 0.3981 0.903225806451613 1.227 1.205 1.099 0.9165 0.7944 0.3746 0.935483870967742 0.991 0.967 0.8727 0.7696 0.7174 0.333 0.967741935483871 0.739 0.7213 0.6521 0.5794 0.5398 0.3042

0.1 3.7873 3.7023 3.4583 3.0954 2.7185 1.08244 Average of yearly averages: 0.641596666666667

Inputs generated by pe5.pl - Novemeber 2006

Data used for this run: Output File: 2NCcot Metfile: w13722.dvf PRZM scenario: NCcottonSTD.txt EXAMS environment file: ir298.exv Chemical Name: pyroxasulfone Description Variable Name Value Units Comments Molecular weight mwt 367 g/mol Henry's Law Const. henry 2.65E-9 atm-m^3/mol Vapor Pressure vapr 1.8E-8 torr Solubility sol 3.49 mg/L Kd Kd mg/L Koc Koc 94.75 mg/L Photolysis half-life kdp days Half-life Aerobic Aquatic Metabolism kbacw 270 days Halfife Anaerobic Aquatic Metabolism kbacs 157 days Halfife Aerobic Soil Metabolism asm 1055 days Halfife Hydrolysis: pH 7 days Half-life Method: CAM 2 integer See PRZM manual Incorporation Depth: DEPI cm Application Rate: TAPP 0.088 kg/ha Application Efficiency: APPEFF 0.95 fraction Spray Drift DRFT 0.094 fraction of application rate applied to pond Application Date Date 1-5 dd/mm or dd/mmm or dd-mm or dd-mmm Record 17: FILTRA IPSCND 1

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)

Preplant, Ground, 1 application stored as 3NCcot.out Chemical: pyroxasulfone PRZM environment: NCcottonSTD.txt modified Tueday, 29 May 2007 at 12:58:38 EXAMS environment: ir298.exv modified Tueday, 26 August 2008 at 05:14:08 Metfile: w13722.dvf modified Tueday, 26 August 2008 at 05:14:28 Water segment concentrations (ppb)

Year Peak 96 hr 21 Day 60 Day 90 Day Yearly 1961 2.646 2.585 2.373 2.003 1.758 0.6508 1962 1.847 1.803 1.684 1.446 1.29 0.5519 1963 4.596 4.526 4.106 3.475 3.014 1.148 1964 1.007 0.983 0.8887 0.7944 0.7316 0.4128

# 27 1965 3.615 3.538 3.314 2.737 2.407 0.9573 1966 3.407 3.339 3.048 2.596 2.367 0.9964 1967 2.059 2.028 1.851 1.766 1.614 0.6955 1968 2.253 2.205 2.014 1.678 1.466 0.6102 1969 2.68 2.618 2.54 2.231 1.967 0.7855 1970 2.103 2.055 1.9 1.679 1.539 0.6759 1971 3.843 3.755 3.48 3.048 2.676 1.046 1972 5.622 5.518 5.193 4.654 4.156 1.65 1973 2.002 1.956 1.774 1.58 1.394 0.6678 1974 4.588 4.484 4.211 3.556 3.133 1.223 1975 2.069 2.02 1.86 1.52 1.328 0.6005 1976 3.086 3.014 2.889 2.478 2.148 0.8542 1977 2.832 2.784 2.531 2.047 1.77 0.7536 1978 4.519 4.424 4.191 3.554 3.123 1.216 1979 2.966 2.9 2.744 2.388 2.134 0.8929 1980 3.357 3.276 2.96 2.775 2.565 1.054 1981 2.637 2.574 2.492 2.126 1.867 0.8105 1982 2.22 2.182 2.053 1.737 1.511 0.625 1983 3.268 3.198 2.996 2.474 2.13 0.8354 1984 4.603 4.529 4.101 3.343 2.881 1.147 1985 3.386 3.31 3.096 2.805 2.514 1.043 1986 4.453 4.364 3.979 3.296 2.89 1.146 1987 1.382 1.349 1.217 1.048 0.9836 0.5174 1988 1.686 1.654 1.509 1.262 1.094 0.4555 1989 6.556 6.438 6.044 5.231 4.591 1.732 1990 5.556 5.43 5.076 4.568 4.013 1.603

Sorted results Prob. Peak 96 hr 21 Day 60 Day 90 Day Yearly 0.032258064516129 6.556 6.438 6.044 5.231 4.591 1.732 0.0645161290322581 5.622 5.518 5.193 4.654 4.156 1.65 0.0967741935483871 5.556 5.43 5.076 4.568 4.013 1.603 0.129032258064516 4.603 4.529 4.211 3.556 3.133 1.223 0.161290322580645 4.596 4.526 4.191 3.554 3.123 1.216 0.193548387096774 4.588 4.484 4.106 3.475 3.014 1.148 0.225806451612903 4.519 4.424 4.101 3.343 2.89 1.147 0.258064516129032 4.453 4.364 3.979 3.296 2.881 1.146 0.290322580645161 3.843 3.755 3.48 3.048 2.676 1.054 0.32258064516129 3.615 3.538 3.314 2.805 2.565 1.046 0.354838709677419 3.407 3.339 3.096 2.775 2.514 1.043 0.387096774193548 3.386 3.31 3.048 2.737 2.407 0.9964 0.419354838709677 3.357 3.276 2.996 2.596 2.367 0.9573 0.451612903225806 3.268 3.198 2.96 2.478 2.148 0.8929 0.483870967741936 3.086 3.014 2.889 2.474 2.134 0.8542 0.516129032258065 2.966 2.9 2.744 2.388 2.13 0.8354 0.548387096774194 2.832 2.784 2.54 2.231 1.967 0.8105 0.580645161290323 2.68 2.618 2.531 2.126 1.867 0.7855 0.612903225806452 2.646 2.585 2.492 2.047 1.77 0.7536 0.645161290322581 2.637 2.574 2.373 2.003 1.758 0.6955 0.67741935483871 2.253 2.205 2.053 1.766 1.614 0.6759 0.709677419354839 2.22 2.182 2.014 1.737 1.539 0.6678 0.741935483870968 2.103 2.055 1.9 1.679 1.511 0.6508 0.774193548387097 2.069 2.028 1.86 1.678 1.466 0.625 0.806451612903226 2.059 2.02 1.851 1.58 1.394 0.6102 0.838709677419355 2.002 1.956 1.774 1.52 1.328 0.6005 0.870967741935484 1.847 1.803 1.684 1.446 1.29 0.5519 0.903225806451613 1.686 1.654 1.509 1.262 1.094 0.5174 0.935483870967742 1.382 1.349 1.217 1.048 0.9836 0.4555 0.967741935483871 1.007 0.983 0.8887 0.7944 0.7316 0.4128

0.1 5.4607 5.3399 4.9895 4.4668 3.925 1.565 Average of yearly averages: 0.911903333333333

Inputs generated by pe5.pl - Novemeber 2006

Data used for this run: Output File: 3NCcot Metfile: w13722.dvf PRZM scenario: NCcottonSTD.txt EXAMS environment file: ir298.exv Chemical Name: pyroxasulfone

# 28 Description Variable Name Value Units Comments Molecular weight mwt 367 g/mol Henry's Law Const. henry 2.65E-9 atm-m^3/mol Vapor Pressure vapr 1.8E-8 torr Solubility sol 3.49 mg/L Kd Kd mg/L Koc Koc 94.75 mg/L Photolysis half-life kdp days Half-life Aerobic Aquatic Metabolism kbacw 270 days Halfife Anaerobic Aquatic Metabolism kbacs 157 days Halfife Aerobic Soil Metabolism asm 1055 days Halfife Hydrolysis: pH 7 days Half-life Method: CAM 2 integer See PRZM manual Incorporation Depth: DEPI cm Application Rate: TAPP 0.1249 kg/ha Application Efficiency: APPEFF 0.99 fraction Spray Drift DRFT 0.064 fraction of application rate applied to pond Application Date Date 1-5 dd/mm or dd/mmm or dd-mm or dd-mmm Record 17: FILTRA IPSCND 1

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)

Preplant, Ground, 2 applications stored as 4NCcot.out Chemical: pyroxasulfone PRZM environment: NCcottonSTD.txt modified Tueday, 29 May 2007 at 12:58:38 EXAMS environment: ir298.exv modified Tueday, 26 August 2008 at 05:14:08 Metfile: w13722.dvf modified Tueday, 26 August 2008 at 05:14:28 Water segment concentrations (ppb)

Year Peak 96 hr 21 Day 60 Day 90 Day Yearly 1961 2.817 2.752 2.641 2.495 2.321 0.9079 1962 3.992 3.897 3.644 3.132 2.795 1.153 1963 9.326 9.185 8.333 7.055 6.119 2.33 1964 2.167 2.114 1.911 1.723 1.571 0.8578 1965 9.26 9.05 8.479 7.011 6.114 2.395 1966 7.948 7.804 7.151 6.193 5.423 2.335 1967 5.553 5.421 4.989 4.168 3.881 1.73 1968 5.639 5.522 5.056 4.249 3.72 1.541 1969 5.663 5.533 5.369 4.72 4.162 1.677 1970 3.538 3.458 3.235 2.771 2.717 1.311 1971 9.459 9.249 8.385 7.447 6.611 2.589 1972 10.21 10.03 9.544 8.533 7.66 3.256 1973 5.051 4.936 4.467 4.082 3.629 1.65 1974 7.606 7.433 6.953 5.813 5.181 2.13 1975 4.827 4.71 4.339 3.551 3.097 1.344 1976 8.677 8.484 8.182 7.121 6.211 2.414 1977 6.905 6.782 6.174 4.995 4.335 1.86 1978 5.257 5.144 4.722 4.468 4.192 1.826 1979 4.68 4.612 4.312 3.904 3.519 1.533 1980 7.22 7.047 6.37 5.963 5.515 2.241 1981 6.32 6.171 5.874 5.136 4.568 1.938 1982 4.556 4.478 4.213 3.566 3.103 1.308 1983 8.658 8.481 8.001 6.634 5.725 2.189 1984 11.48 11.29 10.22 8.369 7.223 2.821 1985 6.095 5.958 5.413 4.865 4.366 1.973 1986 8.998 8.817 8.04 6.66 5.839 2.304 1987 2.948 2.877 2.598 2.243 2.105 1.087 1988 4.142 4.063 3.713 3.129 2.724 1.105 1989 7.916 7.787 7.169 6.425 5.975 2.426 1990 9.725 9.502 8.599 7.066 6.397 2.684

Sorted results Prob. Peak 96 hr 21 Day 60 Day 90 Day Yearly 0.032258064516129 11.48 11.29 10.22 8.533 7.66 3.256 0.0645161290322581 10.21 10.03 9.544 8.369 7.223 2.821

# 29 0.0967741935483871 9.725 9.502 8.599 7.447 6.611 2.684 0.129032258064516 9.459 9.249 8.479 7.121 6.397 2.589 0.161290322580645 9.326 9.185 8.385 7.066 6.211 2.426 0.193548387096774 9.26 9.05 8.333 7.055 6.119 2.414 0.225806451612903 8.998 8.817 8.182 7.011 6.114 2.395 0.258064516129032 8.677 8.484 8.04 6.66 5.975 2.335 0.290322580645161 8.658 8.481 8.001 6.634 5.839 2.33 0.32258064516129 7.948 7.804 7.169 6.425 5.725 2.304 0.354838709677419 7.916 7.787 7.151 6.193 5.515 2.241 0.387096774193548 7.606 7.433 6.953 5.963 5.423 2.189 0.419354838709677 7.22 7.047 6.37 5.813 5.181 2.13 0.451612903225806 6.905 6.782 6.174 5.136 4.568 1.973 0.483870967741936 6.32 6.171 5.874 4.995 4.366 1.938 0.516129032258065 6.095 5.958 5.413 4.865 4.335 1.86 0.548387096774194 5.663 5.533 5.369 4.72 4.192 1.826 0.580645161290323 5.639 5.522 5.056 4.468 4.162 1.73 0.612903225806452 5.553 5.421 4.989 4.249 3.881 1.677 0.645161290322581 5.257 5.144 4.722 4.168 3.72 1.65 0.67741935483871 5.051 4.936 4.467 4.082 3.629 1.541 0.709677419354839 4.827 4.71 4.339 3.904 3.519 1.533 0.741935483870968 4.68 4.612 4.312 3.566 3.103 1.344 0.774193548387097 4.556 4.478 4.213 3.551 3.097 1.311 0.806451612903226 4.142 4.063 3.713 3.132 2.795 1.308 0.838709677419355 3.992 3.897 3.644 3.129 2.724 1.153 0.870967741935484 3.538 3.458 3.235 2.771 2.717 1.105 0.903225806451613 2.948 2.877 2.641 2.495 2.321 1.087 0.935483870967742 2.817 2.752 2.598 2.243 2.105 0.9079 0.967741935483871 2.167 2.114 1.911 1.723 1.571 0.8578

0.1 9.6984 9.4767 8.587 7.4144 6.5896 2.6745 Average of yearly averages: 1.89719

Inputs generated by pe5.pl - Novemeber 2006

Data used for this run: Output File: 4NCcot Metfile: w13722.dvf PRZM scenario: NCcottonSTD.txt EXAMS environment file: ir298.exv Chemical Name: pyroxasulfone Description Variable Name Value Units Comments Molecular weight mwt 367 g/mol Henry's Law Const. henry 2.65E-9 atm-m^3/mol Vapor Pressure vapr 1.8E-8 torr Solubility sol 3.49 mg/L Kd Kd mg/L Koc Koc 94.75 mg/L Photolysis half-life kdp days Half-life Aerobic Aquatic Metabolism kbacw 270 days Halfife Anaerobic Aquatic Metabolism kbacs 157 days Halfife Aerobic Soil Metabolism asm 1055 days Halfife Hydrolysis: pH 7 days Half-life Method: CAM 2 integer See PRZM manual Incorporation Depth: DEPI cm Application Rate: TAPP 0.1249 kg/ha Application Efficiency: APPEFF 0.99 fraction Spray Drift DRFT 0.064 fraction of application rate applied to pond Application Date Date 1-5 dd/mm or dd/mmm or dd-mm or dd-mmm Interval 1 interval 14 days Set to 0 or delete line for single app. app. rate 1 apprate 0.1249 kg/ha Record 17: FILTRA IPSCND 1

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)

Post Plant, Ground, 1 application stored as 5NCcot.out

# 30 Chemical: pyroxasulfone PRZM environment: NCcottonSTD.txt modified Tueday, 29 May 2007 at 12:58:38 EXAMS environment: ir298.exv modified Tueday, 26 August 2008 at 05:14:08 Metfile: w13722.dvf modified Tueday, 26 August 2008 at 05:14:28 Water segment concentrations (ppb)

Year Peak 96 hr 21 Day 60 Day 90 Day Yearly 1961 1.239 1.216 1.112 0.9286 0.8097 0.2947 1962 3.171 3.095 2.959 2.691 2.372 0.895 1963 0.6666 0.6506 0.588 0.5065 0.4555 0.2944 1964 1.764 1.721 1.629 1.517 1.383 0.5472 1965 7.403 7.227 6.71 5.551 4.815 1.785 1966 3.455 3.371 3.164 2.682 2.408 1.091 1967 7.442 7.265 6.878 5.869 5.111 1.936 1968 2.192 2.15 1.95 1.659 1.482 0.8175 1969 2.693 2.63 2.551 2.247 2.003 0.8184 1970 2.674 2.63 2.515 2.207 1.93 0.7843 1971 1.803 1.762 1.607 1.383 1.212 0.5572 1972 4.613 4.504 4.24 3.663 3.195 1.199 1973 4.558 4.446 4.121 3.386 2.919 1.188 1974 1.103 1.087 0.9876 0.9056 0.8303 0.4591 1975 2.241 2.186 1.985 1.604 1.382 0.5394 1976 0.944 0.9218 0.847 0.7191 0.6326 0.3406 1977 1.301 1.27 1.157 1.079 0.9945 0.4486 1978 2.359 2.302 2.105 2.009 1.812 0.7568 1979 2.15 2.112 1.97 1.65 1.506 0.6935 1980 4.313 4.206 3.801 3.05 2.634 1.02 1981 3.509 3.419 3.095 2.566 2.246 0.9333 1982 6.066 5.929 5.397 4.414 3.8 1.487 1983 1.585 1.548 1.449 1.208 1.052 0.5473 1984 1.74 1.72 1.59 1.374 1.215 0.5015 1985 1.943 1.895 1.726 1.548 1.372 0.5649 1986 1.316 1.283 1.214 1.108 1.011 0.4497 1987 1.457 1.421 1.281 1.039 0.9805 0.4543 1988 0.9812 0.9581 0.8669 0.8058 0.7715 0.3854 1989 3.828 3.755 3.55 2.954 2.55 0.9522 1990 0.5474 0.5339 0.5087 0.4587 0.4094 0.2849

Sorted results Prob. Peak 96 hr 21 Day 60 Day 90 Day Yearly 0.032258064516129 7.442 7.265 6.878 5.869 5.111 1.936 0.0645161290322581 7.403 7.227 6.71 5.551 4.815 1.785 0.0967741935483871 6.066 5.929 5.397 4.414 3.8 1.487 0.129032258064516 4.613 4.504 4.24 3.663 3.195 1.199 0.161290322580645 4.558 4.446 4.121 3.386 2.919 1.188 0.193548387096774 4.313 4.206 3.801 3.05 2.634 1.091 0.225806451612903 3.828 3.755 3.55 2.954 2.55 1.02 0.258064516129032 3.509 3.419 3.164 2.691 2.408 0.9522 0.290322580645161 3.455 3.371 3.095 2.682 2.372 0.9333 0.32258064516129 3.171 3.095 2.959 2.566 2.246 0.895 0.354838709677419 2.693 2.63 2.551 2.247 2.003 0.8184 0.387096774193548 2.674 2.63 2.515 2.207 1.93 0.8175 0.419354838709677 2.359 2.302 2.105 2.009 1.812 0.7843 0.451612903225806 2.241 2.186 1.985 1.659 1.506 0.7568 0.483870967741936 2.192 2.15 1.97 1.65 1.482 0.6935 0.516129032258065 2.15 2.112 1.95 1.604 1.383 0.5649 0.548387096774194 1.943 1.895 1.726 1.548 1.382 0.5572 0.580645161290323 1.803 1.762 1.629 1.517 1.372 0.5473 0.612903225806452 1.764 1.721 1.607 1.383 1.215 0.5472 0.645161290322581 1.74 1.72 1.59 1.374 1.212 0.5394 0.67741935483871 1.585 1.548 1.449 1.208 1.052 0.5015 0.709677419354839 1.457 1.421 1.281 1.108 1.011 0.4591 0.741935483870968 1.316 1.283 1.214 1.079 0.9945 0.4543 0.774193548387097 1.301 1.27 1.157 1.039 0.9805 0.4497 0.806451612903226 1.239 1.216 1.112 0.9286 0.8303 0.4486 0.838709677419355 1.103 1.087 0.9876 0.9056 0.8097 0.3854 0.870967741935484 0.9812 0.9581 0.8669 0.8058 0.7715 0.3406 0.903225806451613 0.944 0.9218 0.847 0.7191 0.6326 0.2947 0.935483870967742 0.6666 0.6506 0.588 0.5065 0.4555 0.2944 0.967741935483871 0.5474 0.5339 0.5087 0.4587 0.4094 0.2849

# 31 0.1 5.9207 5.7865 5.2813 4.3389 3.7395 1.4582 Average of yearly averages: 0.76754

Inputs generated by pe5.pl - Novemeber 2006

Data used for this run: Output File: 5NCcot Metfile: w13722.dvf PRZM scenario: NCcottonSTD.txt EXAMS environment file: ir298.exv Chemical Name: pyroxasulfone Description Variable Name Value Units Comments Molecular weight mwt 367 g/mol Henry's Law Const. henry 2.65E-9 atm-m^3/mol Vapor Pressure vapr 1.8E-8 torr Solubility sol 3.49 mg/L Kd Kd mg/L Koc Koc 94.75 mg/L Photolysis half-life kdp days Half-life Aerobic Aquatic Metabolism kbacw 270 days Halfife Anaerobic Aquatic Metabolism kbacs 157 days Halfife Aerobic Soil Metabolism asm 1055 days Halfife Hydrolysis: pH 7 days Half-life Method: CAM 2 integer See PRZM manual Incorporation Depth: DEPI cm Application Rate: TAPP 0.1249 kg/ha Application Efficiency: APPEFF 0.99 fraction Spray Drift DRFT 0.064 fraction of application rate applied to pond Application Date Date 4-6 dd/mm or dd/mmm or dd-mm or dd-mmm Record 17: FILTRA IPSCND 1

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)

Post Plant, Ground, 2 applications stored as 6NCcot.out Chemical: pyroxasulfone PRZM environment: NCcottonSTD.txt modified Tueday, 29 May 2007 at 12:58:38 EXAMS environment: ir298.exv modified Tueday, 26 August 2008 at 05:14:08 Metfile: w13722.dvf modified Tueday, 26 August 2008 at 05:14:28 Water segment concentrations (ppb)

Year Peak 96 hr 21 Day 60 Day 90 Day Yearly 1961 3.405 3.347 3.068 2.576 2.266 0.813 1962 6.226 6.075 5.679 4.869 4.328 1.723 1963 1.725 1.683 1.52 1.34 1.2 0.6973 1964 3.99 3.893 3.695 3.437 3.15 1.26 1965 9.73 9.605 8.868 7.701 6.982 2.778 1966 8.994 8.783 8.284 7.11 6.457 2.731 1967 15.36 15 14.2 12.12 10.56 4.091 1968 5.544 5.45 4.953 4.156 3.669 1.889 1969 3.955 3.888 3.617 3.49 3.277 1.52 1970 5.812 5.715 5.457 4.799 4.199 1.678 1971 4.612 4.509 4.102 3.535 3.109 1.369 1972 9.475 9.252 8.713 7.534 6.573 2.492 1973 13.74 13.4 12.37 10.21 8.804 3.408 1974 2.712 2.67 2.426 2.285 2.12 1.234 1975 5.776 5.634 5.114 4.133 3.563 1.374 1976 2.687 2.624 2.398 2.047 1.803 0.8734 1977 3.371 3.291 2.999 2.76 2.532 1.147 1978 5.407 5.274 4.762 4.218 3.755 1.679 1979 5.506 5.393 4.963 4.224 3.749 1.633 1980 10.47 10.21 9.232 7.42 6.419 2.498 1981 8.009 7.806 7.066 5.881 5.156 2.158 1982 6.638 6.478 5.881 5.455 4.873 2.097 1983 2.155 2.104 1.909 1.643 1.48 0.845 1984 4.062 4.022 3.715 3.191 2.825 1.138

# 32 1985 4.801 4.685 4.277 3.851 3.437 1.4 1986 3.1 3.023 2.866 2.592 2.38 1.066 1987 3.206 3.127 2.82 2.291 2.185 1.021 1988 2.109 2.057 1.915 1.813 1.722 0.9015 1989 5.192 5.066 4.834 4.262 3.855 1.56 1990 1.173 1.143 1.092 0.9944 0.8896 0.5641

Sorted results Prob. Peak 96 hr 21 Day 60 Day 90 Day Yearly 0.032258064516129 15.36 15 14.2 12.12 10.56 4.091 0.0645161290322581 13.74 13.4 12.37 10.21 8.804 3.408 0.0967741935483871 10.47 10.21 9.232 7.701 6.982 2.778 0.129032258064516 9.73 9.605 8.868 7.534 6.573 2.731 0.161290322580645 9.475 9.252 8.713 7.42 6.457 2.498 0.193548387096774 8.994 8.783 8.284 7.11 6.419 2.492 0.225806451612903 8.009 7.806 7.066 5.881 5.156 2.158 0.258064516129032 6.638 6.478 5.881 5.455 4.873 2.097 0.290322580645161 6.226 6.075 5.679 4.869 4.328 1.889 0.32258064516129 5.812 5.715 5.457 4.799 4.199 1.723 0.354838709677419 5.776 5.634 5.114 4.262 3.855 1.679 0.387096774193548 5.544 5.45 4.963 4.224 3.755 1.678 0.419354838709677 5.506 5.393 4.953 4.218 3.749 1.633 0.451612903225806 5.407 5.274 4.834 4.156 3.669 1.56 0.483870967741936 5.192 5.066 4.762 4.133 3.563 1.52 0.516129032258065 4.801 4.685 4.277 3.851 3.437 1.4 0.548387096774194 4.612 4.509 4.102 3.535 3.277 1.374 0.580645161290323 4.062 4.022 3.715 3.49 3.15 1.369 0.612903225806452 3.99 3.893 3.695 3.437 3.109 1.26 0.645161290322581 3.955 3.888 3.617 3.191 2.825 1.234 0.67741935483871 3.405 3.347 3.068 2.76 2.532 1.147 0.709677419354839 3.371 3.291 2.999 2.592 2.38 1.138 0.741935483870968 3.206 3.127 2.866 2.576 2.266 1.066 0.774193548387097 3.1 3.023 2.82 2.291 2.185 1.021 0.806451612903226 2.712 2.67 2.426 2.285 2.12 0.9015 0.838709677419355 2.687 2.624 2.398 2.047 1.803 0.8734 0.870967741935484 2.155 2.104 1.915 1.813 1.722 0.845 0.903225806451613 2.109 2.057 1.909 1.643 1.48 0.813 0.935483870967742 1.725 1.683 1.52 1.34 1.2 0.6973 0.967741935483871 1.173 1.143 1.092 0.9944 0.8896 0.5641

0.1 10.396 10.1495 9.1956 7.6843 6.9411 2.7733 Average of yearly averages: 1.65461

Inputs generated by pe5.pl - Novemeber 2006

Data used for this run: Output File: 6NCcot Metfile: w13722.dvf PRZM scenario: NCcottonSTD.txt EXAMS environment file: ir298.exv Chemical Name: pyroxasulfone Description Variable Name Value Units Comments Molecular weight mwt 367 g/mol Henry's Law Const. henry 2.65E-9 atm-m^3/mol Vapor Pressure vapr 1.8E-8 torr Solubility sol 3.49 mg/L Kd Kd mg/L Koc Koc 94.75 mg/L Photolysis half-life kdp days Half-life Aerobic Aquatic Metabolism kbacw 270 days Halfife Anaerobic Aquatic Metabolism kbacs 157 days Halfife Aerobic Soil Metabolism asm 1055 days Halfife Hydrolysis: pH 7 days Half-life Method: CAM 2 integer See PRZM manual Incorporation Depth: DEPI cm Application Rate: TAPP 0.1249 kg/ha Application Efficiency: APPEFF 0.99 fraction Spray Drift DRFT 0.064 fraction of application rate applied to pond Application Date Date 4-6 dd/mm or dd/mmm or dd-mm or dd-mmm Interval 1 interval 14 days Set to 0 or delete line for single app. app. rate 1 apprate 0.1249 kg/ha

# 33 Record 17: FILTRA IPSCND 1

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)

Fall, Ground stored as 7NCcot.out Chemical: pyroxasulfone PRZM environment: NCcottonSTD.txt modified Tueday, 29 May 2007 at 12:58:38 EXAMS environment: ir298.exv modified Tueday, 26 August 2008 at 05:14:08 Metfile: w13722.dvf modified Tueday, 26 August 2008 at 05:14:28 Water segment concentrations (ppb)

Year Peak 96 hr 21 Day 60 Day 90 Day Yearly 1961 3.62 3.543 3.38 2.037 1.411 0.3478 1962 11.31 11.07 10.31 8.3 5.641 2.231 1963 13.8 13.5 12.31 10.05 6.88 3.464 1964 8.207 8.04 7.393 6.163 5.41 2.379 1965 2.569 2.516 2.309 1.939 1.71 0.7834 1966 2.433 2.38 2.28 2.035 1.554 0.9291 1967 2.586 2.542 2.455 1.83 1.429 0.8175 1968 7.342 7.184 6.682 6.277 4.966 1.807 1969 4.429 4.342 3.997 3.349 2.949 1.345 1970 4.321 4.256 3.96 3.335 2.606 1.143 1971 3.085 3.041 2.801 2.587 2.022 1.142 1972 5.266 5.152 4.84 4.042 2.847 1.237 1973 4.517 4.426 3.942 2.651 2.325 1.215 1974 4.136 4.049 3.715 3.083 2.695 1.345 1975 8.529 8.34 7.703 5.729 3.946 1.429 1976 5.364 5.255 4.831 4.435 3.6 2.236 1977 7.035 6.882 6.283 5.424 4.035 1.958 1978 4.551 4.46 4.158 3.496 3.078 1.635 1979 6.262 6.125 5.678 4.787 3.294 1.542 1980 3.861 3.783 3.555 3.037 2.681 1.433 1981 7.84 7.665 7.011 5.892 4.399 1.644 1982 5.792 5.667 5.413 4.844 3.695 2.085 1983 6.934 6.787 6.579 6.291 4.877 2.143 1984 5.217 5.114 4.711 3.935 3.457 1.631 1985 7.133 7.019 6.548 5.394 3.698 1.659 1986 4.828 4.73 4.344 3.63 3.185 1.628 1987 2.384 2.336 2.151 1.815 1.596 0.8082 1988 6.226 6.09 5.606 4.716 3.545 1.157 1989 3.426 3.357 3.083 2.771 2.258 1.417 1990 8.303 8.113 7.448 6.292 4.755 1.738

Sorted results Prob. Peak 96 hr 21 Day 60 Day 90 Day Yearly 0.032258064516129 13.8 13.5 12.31 10.05 6.88 3.464 0.0645161290322581 11.31 11.07 10.31 8.3 5.641 2.379 0.0967741935483871 8.529 8.34 7.703 6.292 5.41 2.236 0.129032258064516 8.303 8.113 7.448 6.291 4.966 2.231 0.161290322580645 8.207 8.04 7.393 6.277 4.877 2.143 0.193548387096774 7.84 7.665 7.011 6.163 4.755 2.085 0.225806451612903 7.342 7.184 6.682 5.892 4.399 1.958 0.258064516129032 7.133 7.019 6.579 5.729 4.035 1.807 0.290322580645161 7.035 6.882 6.548 5.424 3.946 1.738 0.32258064516129 6.934 6.787 6.283 5.394 3.698 1.659 0.354838709677419 6.262 6.125 5.678 4.844 3.695 1.644 0.387096774193548 6.226 6.09 5.606 4.787 3.6 1.635 0.419354838709677 5.792 5.667 5.413 4.716 3.545 1.631 0.451612903225806 5.364 5.255 4.84 4.435 3.457 1.628 0.483870967741936 5.266 5.152 4.831 4.042 3.294 1.542 0.516129032258065 5.217 5.114 4.711 3.935 3.185 1.433 0.548387096774194 4.828 4.73 4.344 3.63 3.078 1.429 0.580645161290323 4.551 4.46 4.158 3.496 2.949 1.417 0.612903225806452 4.517 4.426 3.997 3.349 2.847 1.345 0.645161290322581 4.429 4.342 3.96 3.335 2.695 1.345

# 34 0.67741935483871 4.321 4.256 3.942 3.083 2.681 1.237 0.709677419354839 4.136 4.049 3.715 3.037 2.606 1.215 0.741935483870968 3.861 3.783 3.555 2.771 2.325 1.157 0.774193548387097 3.62 3.543 3.38 2.651 2.258 1.143 0.806451612903226 3.426 3.357 3.083 2.587 2.022 1.142 0.838709677419355 3.085 3.041 2.801 2.037 1.71 0.9291 0.870967741935484 2.586 2.542 2.455 2.035 1.596 0.8175 0.903225806451613 2.569 2.516 2.309 1.939 1.554 0.8082 0.935483870967742 2.433 2.38 2.28 1.83 1.429 0.7834 0.967741935483871 2.384 2.336 2.151 1.815 1.411 0.3478

0.1 8.5064 8.3173 7.6775 6.2919 5.3656 2.2355 Average of yearly averages: 1.5443

Inputs generated by pe5.pl - Novemeber 2006

Data used for this run: Output File: 7NCcot Metfile: w13722.dvf PRZM scenario: NCcottonSTD.txt EXAMS environment file: ir298.exv Chemical Name: pyroxasulfone Description Variable Name Value Units Comments Molecular weight mwt 367 g/mol Henry's Law Const. henry 2.65E-9 atm-m^3/mol Vapor Pressure vapr 1.8E-8 torr Solubility sol 3.49 mg/L Kd Kd mg/L Koc Koc 94.75 mg/L Photolysis half-life kdp days Half-life Aerobic Aquatic Metabolism kbacw 270 days Halfife Anaerobic Aquatic Metabolism kbacs 157 days Halfife Aerobic Soil Metabolism asm 1055 days Halfife Hydrolysis: pH 7 days Half-life Method: CAM 2 integer See PRZM manual Incorporation Depth: DEPI cm Application Rate: TAPP 0.1249 kg/ha Application Efficiency: APPEFF 0.99 fraction Spray Drift DRFT 0.064 fraction of application rate applied to pond Application Date Date 15-10 dd/mm or dd/mmm or dd-mm or dd-mmm Record 17: FILTRA IPSCND 1

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)

Fall, Aerial stored as 8NCcot.out Chemical: pyroxasulfone PRZM environment: NCcottonSTD.txt modified Tueday, 29 May 2007 at 12:58:38 EXAMS environment: ir298.exv modified Tueday, 26 August 2008 at 05:14:08 Metfile: w13722.dvf modified Tueday, 26 August 2008 at 05:14:28 Water segment concentrations (ppb)

Year Peak 96 hr 21 Day 60 Day 90 Day Yearly 1961 2.508 2.455 2.344 1.445 1.018 0.251 1962 7.756 7.587 7.067 5.695 3.89 1.541 1963 9.445 9.238 8.426 6.88 4.729 2.377 1964 5.613 5.499 5.057 4.216 3.701 1.641 1965 1.789 1.753 1.608 1.35 1.191 0.559 1966 1.729 1.692 1.625 1.445 1.117 0.6579 1967 1.813 1.782 1.722 1.306 1.032 0.5821 1968 5.06 4.951 4.606 4.333 3.432 1.253 1969 3.051 2.991 2.754 2.307 2.032 0.94 1970 3.02 2.974 2.767 2.329 1.831 0.8029 1971 2.191 2.159 1.988 1.827 1.435 0.8022 1972 3.646 3.567 3.351 2.807 1.994 0.8665 1973 3.116 3.054 2.726 1.834 1.609 0.852

# 35 1974 2.852 2.792 2.561 2.126 1.859 0.9398 1975 5.863 5.734 5.295 3.951 2.739 0.9971 1976 3.685 3.611 3.319 3.083 2.505 1.544 1977 4.857 4.752 4.338 3.745 2.801 1.356 1978 3.134 3.072 2.863 2.408 2.119 1.137 1979 4.326 4.232 3.922 3.312 2.297 1.073 1980 2.665 2.611 2.453 2.095 1.849 0.9993 1981 5.412 5.291 4.84 4.066 3.047 1.143 1982 4.016 3.929 3.758 3.357 2.57 1.442 1983 4.772 4.67 4.531 4.339 3.371 1.481 1984 3.586 3.514 3.238 2.705 2.376 1.134 1985 4.909 4.831 4.506 3.723 2.571 1.153 1986 3.321 3.254 2.989 2.498 2.192 1.132 1987 1.663 1.63 1.501 1.266 1.113 0.5757 1988 4.313 4.219 3.883 3.266 2.468 0.8121 1989 2.371 2.323 2.136 1.944 1.563 0.9886 1990 5.728 5.597 5.14 4.34 3.288 1.206

Sorted results Prob. Peak 96 hr 21 Day 60 Day 90 Day Yearly 0.032258064516129 9.445 9.238 8.426 6.88 4.729 2.377 0.0645161290322581 7.756 7.587 7.067 5.695 3.89 1.641 0.0967741935483871 5.863 5.734 5.295 4.34 3.701 1.544 0.129032258064516 5.728 5.597 5.14 4.339 3.432 1.541 0.161290322580645 5.613 5.499 5.057 4.333 3.371 1.481 0.193548387096774 5.412 5.291 4.84 4.216 3.288 1.442 0.225806451612903 5.06 4.951 4.606 4.066 3.047 1.356 0.258064516129032 4.909 4.831 4.531 3.951 2.801 1.253 0.290322580645161 4.857 4.752 4.506 3.745 2.739 1.206 0.32258064516129 4.772 4.67 4.338 3.723 2.571 1.153 0.354838709677419 4.326 4.232 3.922 3.357 2.57 1.143 0.387096774193548 4.313 4.219 3.883 3.312 2.505 1.137 0.419354838709677 4.016 3.929 3.758 3.266 2.468 1.134 0.451612903225806 3.685 3.611 3.351 3.083 2.376 1.132 0.483870967741936 3.646 3.567 3.319 2.807 2.297 1.073 0.516129032258065 3.586 3.514 3.238 2.705 2.192 0.9993 0.548387096774194 3.321 3.254 2.989 2.498 2.119 0.9971 0.580645161290323 3.134 3.072 2.863 2.408 2.032 0.9886 0.612903225806452 3.116 3.054 2.767 2.329 1.994 0.94 0.645161290322581 3.051 2.991 2.754 2.307 1.859 0.9398 0.67741935483871 3.02 2.974 2.726 2.126 1.849 0.8665 0.709677419354839 2.852 2.792 2.561 2.095 1.831 0.852 0.741935483870968 2.665 2.611 2.453 1.944 1.609 0.8121 0.774193548387097 2.508 2.455 2.344 1.834 1.563 0.8029 0.806451612903226 2.371 2.323 2.136 1.827 1.435 0.8022 0.838709677419355 2.191 2.159 1.988 1.445 1.191 0.6579 0.870967741935484 1.813 1.782 1.722 1.445 1.117 0.5821 0.903225806451613 1.789 1.753 1.625 1.35 1.113 0.5757 0.935483870967742 1.729 1.692 1.608 1.306 1.032 0.559 0.967741935483871 1.663 1.63 1.501 1.266 1.018 0.251

0.1 5.8495 5.7203 5.2795 4.3399 3.6741 1.5437 Average of yearly averages: 1.07464

Inputs generated by pe5.pl - Novemeber 2006

Data used for this run: Output File: 8NCcot Metfile: w13722.dvf PRZM scenario: NCcottonSTD.txt EXAMS environment file: ir298.exv Chemical Name: pyroxasulfone Description Variable Name Value Units Comments Molecular weight mwt 367 g/mol Henry's Law Const. henry 2.65E-9 atm-m^3/mol Vapor Pressure vapr 1.8E-8 torr Solubility sol 3.49 mg/L Kd Kd mg/L Koc Koc 94.75 mg/L Photolysis half-life kdp days Half-life Aerobic Aquatic Metabolism kbacw 270 days Halfife

# 36 Anaerobic Aquatic Metabolism kbacs 157 days Halfife Aerobic Soil Metabolism asm 1055 days Halfife Hydrolysis: pH 7 days Half-life Method: CAM 2 integer See PRZM manual Incorporation Depth: DEPI cm Application Rate: TAPP 0.0883 kg/ha Application Efficiency: APPEFF 0.95 fraction Spray Drift DRFT 0.094 fraction of application rate applied to pond Application Date Date 15-10 dd/mm or dd/mmm or dd-mm or dd-mmm Record 17: FILTRA IPSCND 1

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)

MS Cotton

Pre-emergent, Aerial stored as 1MScot.out Chemical: pyroxasulfone PRZM environment: MScottonSTD.txt modified Tueday, 29 May 2007 at 12:57:52 EXAMS environment: ir298.exv modified Tueday, 26 August 2008 at 05:14:08 Metfile: w93193.dvf modified Tueday, 26 August 2008 at 05:16:12 Water segment concentrations (ppb)

Year Peak 96 hr 21 Day 60 Day 90 Day Yearly 1961 0.8947 0.8899 0.8701 0.6042 0.4522 0.2089 1962 0.9374 0.9314 0.9066 0.8508 0.8056 0.6591 1963 1.958 1.946 1.891 1.766 1.672 1.054 1964 1.025 1.02 0.9943 0.9355 0.8881 0.7961 1965 0.9406 0.9352 0.9104 0.8544 0.8117 0.6894 1966 0.7957 0.7905 0.7676 0.7157 0.6767 0.5513 1967 0.7236 0.7198 0.7009 0.6559 0.6208 0.4937 1968 1.056 1.05 1.035 0.9922 0.8716 0.5816 1969 1.022 1.016 0.9887 0.9251 0.8774 0.7288 1970 1.189 1.183 1.158 0.8307 0.7037 0.6261 1971 1.172 1.165 1.136 1.081 1.032 0.858 1972 0.7297 0.7253 0.7051 0.6641 0.6318 0.5235 1973 0.7366 0.7321 0.7108 0.6609 0.6233 0.5269 1974 1.02 1.015 0.9945 0.9164 0.759 0.5579 1975 1.049 1.044 1.017 0.952 0.9023 0.7787 1976 1.048 1.041 1.013 0.9603 0.9279 0.7818 1977 0.9426 0.9365 0.9176 0.8717 0.8249 0.6679 1978 1.087 1.08 1.049 0.9766 0.9212 0.6859 1979 0.7896 0.7847 0.7624 0.7105 0.6704 0.533 1980 0.6372 0.6332 0.6158 0.5768 0.546 0.4038 1981 0.7885 0.7834 0.7606 0.7066 0.663 0.4995 1982 0.7158 0.7121 0.7003 0.6887 0.6477 0.4754 1983 2.567 2.548 2.465 2.285 2.153 1.289 1984 1.125 1.118 1.086 1.009 0.9741 0.7907 1985 0.7122 0.7074 0.6868 0.6395 0.6007 0.4987 1986 1.002 0.9965 0.7024 0.6321 0.5952 0.4772 1987 1.24 1.231 1.192 1.116 1.074 0.8645 1988 0.749 0.7445 0.7246 0.679 0.6419 0.5041 1989 0.6789 0.674 0.6588 0.631 0.5982 0.4546 1990 1.224 1.215 1.171 1.074 1.004 0.6302

Sorted results Prob. Peak 96 hr 21 Day 60 Day 90 Day Yearly 0.032258064516129 2.567 2.548 2.465 2.285 2.153 1.289 0.0645161290322581 1.958 1.946 1.891 1.766 1.672 1.054 0.0967741935483871 1.24 1.231 1.192 1.116 1.074 0.8645 0.129032258064516 1.224 1.215 1.171 1.081 1.032 0.858 0.161290322580645 1.189 1.183 1.158 1.074 1.004 0.7961 0.193548387096774 1.172 1.165 1.136 1.009 0.9741 0.7907 0.225806451612903 1.125 1.118 1.086 0.9922 0.9279 0.7818 0.258064516129032 1.087 1.08 1.049 0.9766 0.9212 0.7787 0.290322580645161 1.056 1.05 1.035 0.9603 0.9023 0.7288

# 37 0.32258064516129 1.049 1.044 1.017 0.952 0.8881 0.6894 0.354838709677419 1.048 1.041 1.013 0.9355 0.8774 0.6859 0.387096774193548 1.025 1.02 0.9945 0.9251 0.8716 0.6679 0.419354838709677 1.022 1.016 0.9943 0.9164 0.8249 0.6591 0.451612903225806 1.02 1.015 0.9887 0.8717 0.8117 0.6302 0.483870967741936 1.002 0.9965 0.9176 0.8544 0.8056 0.6261 0.516129032258065 0.9426 0.9365 0.9104 0.8508 0.759 0.5816 0.548387096774194 0.9406 0.9352 0.9066 0.8307 0.7037 0.5579 0.580645161290323 0.9374 0.9314 0.8701 0.7157 0.6767 0.5513 0.612903225806452 0.8947 0.8899 0.7676 0.7105 0.6704 0.533 0.645161290322581 0.7957 0.7905 0.7624 0.7066 0.663 0.5269 0.67741935483871 0.7896 0.7847 0.7606 0.6887 0.6477 0.5235 0.709677419354839 0.7885 0.7834 0.7246 0.679 0.6419 0.5041 0.741935483870968 0.749 0.7445 0.7108 0.6641 0.6318 0.4995 0.774193548387097 0.7366 0.7321 0.7051 0.6609 0.6233 0.4987 0.806451612903226 0.7297 0.7253 0.7024 0.6559 0.6208 0.4937 0.838709677419355 0.7236 0.7198 0.7009 0.6395 0.6007 0.4772 0.870967741935484 0.7158 0.7121 0.7003 0.6321 0.5982 0.4754 0.903225806451613 0.7122 0.7074 0.6868 0.631 0.5952 0.4546 0.935483870967742 0.6789 0.674 0.6588 0.6042 0.546 0.4038 0.967741935483871 0.6372 0.6332 0.6158 0.5768 0.4522 0.2089

0.1 1.2384 1.2294 1.1899 1.1125 1.0698 0.86385 Average of yearly averages: 0.639676666666667

Inputs generated by pe5.pl - Novemeber 2006

Data used for this run: Output File: 1MScot Metfile: w93193.dvf PRZM scenario: MScottonSTD.txt EXAMS environment file: ir298.exv Chemical Name: pyroxasulfone Description Variable Name Value Units Comments Molecular weight mwt 367 g/mol Henry's Law Const. henry 2.65E-9 atm-m^3/mol Vapor Pressure vapr 1.8E-8 torr Solubility sol 3.49 mg/L Kd Kd mg/L Koc Koc 94.75 mg/L Photolysis half-life kdp days Half-life Aerobic Aquatic Metabolism kbacw 270 days Halfife Anaerobic Aquatic Metabolism kbacs 157 days Halfife Aerobic Soil Metabolism asm 1055 days Halfife Hydrolysis: pH 7 days Half-life Method: CAM 2 integer See PRZM manual Incorporation Depth: DEPI cm Application Rate: TAPP 0.0883 kg/ha Application Efficiency: APPEFF 0.95 fraction Spray Drift DRFT 0.094 fraction of application rate applied to pond Application Date Date 25-4 dd/mm or dd/mmm or dd-mm or dd-mmm Record 17: FILTRA IPSCND 1

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)

Preplant. Aerial stored as 2MScot.out Chemical: pyroxasulfone PRZM environment: MScottonSTD.txt modified Tueday, 29 May 2007 at 12:57:52 EXAMS environment: ir298.exv modified Tueday, 26 August 2008 at 05:14:08 Metfile: w03940.dvf modified Tueday, 26 August 2008 at 05:14:14 Water segment concentrations (ppb)

Year Peak 96 hr 21 Day 60 Day 90 Day Yearly 1961 0.9493 0.9185 0.8034 0.6938 0.5884 0.1981 1962 7.73 7.565 6.644 5.194 4.295 1.369

# 38 1963 1.329 1.286 1.153 0.909 0.7654 0.2819 1964 6.093 5.891 5.395 4.105 3.364 1.066 1965 0.6998 0.6769 0.5904 0.4479 0.3872 0.1441 1966 1.692 1.642 1.475 1.118 0.9163 0.3047 1967 2.364 2.288 2.037 1.66 1.423 0.485 1968 4.303 4.182 3.689 2.875 2.368 0.7615 1969 2.769 2.679 2.335 1.788 1.472 0.4864 1970 0.8066 0.78 0.7093 0.5829 0.49 0.1699 1971 3.608 3.491 3.162 2.414 1.979 0.6643 1972 0.6588 0.6369 0.5715 0.4905 0.4281 0.1554 1973 4.186 4.096 3.601 2.736 2.296 0.7445 1974 5.703 5.517 4.944 3.752 3.078 0.9968 1975 1.366 1.322 1.208 0.989 0.8202 0.2846 1976 1.174 1.135 1.034 0.8416 0.7104 0.2495 1977 4.959 4.796 4.235 3.295 2.715 0.8652 1978 1.646 1.592 1.441 1.165 0.9667 0.3275 1979 4.463 4.34 3.864 3.105 2.581 0.8337 1980 7.42 7.262 6.418 4.834 3.951 1.255 1981 1.233 1.192 1.056 0.8298 0.7024 0.2462 1982 3.815 3.69 3.263 2.453 2.007 0.6474 1983 7.495 7.333 6.55 4.987 4.1 1.328 1984 2.106 2.038 1.942 1.622 1.354 0.4543 1985 1.108 1.075 0.9724 0.8628 0.7257 0.2449 1986 0.5363 0.5188 0.4679 0.3896 0.3452 0.1208 1987 0.5477 0.5309 0.4871 0.4519 0.3955 0.1341 1988 6.02 5.823 5.13 4.183 3.469 1.109 1989 1.454 1.413 1.235 1.137 0.9756 0.3429 1990 1.154 1.116 1.01 0.798 0.6801 0.2408

Sorted results Prob. Peak 96 hr 21 Day 60 Day 90 Day Yearly 0.032258064516129 7.73 7.565 6.644 5.194 4.295 1.369 0.0645161290322581 7.495 7.333 6.55 4.987 4.1 1.328 0.0967741935483871 7.42 7.262 6.418 4.834 3.951 1.255 0.129032258064516 6.093 5.891 5.395 4.183 3.469 1.109 0.161290322580645 6.02 5.823 5.13 4.105 3.364 1.066 0.193548387096774 5.703 5.517 4.944 3.752 3.078 0.9968 0.225806451612903 4.959 4.796 4.235 3.295 2.715 0.8652 0.258064516129032 4.463 4.34 3.864 3.105 2.581 0.8337 0.290322580645161 4.303 4.182 3.689 2.875 2.368 0.7615 0.32258064516129 4.186 4.096 3.601 2.736 2.296 0.7445 0.354838709677419 3.815 3.69 3.263 2.453 2.007 0.6643 0.387096774193548 3.608 3.491 3.162 2.414 1.979 0.6474 0.419354838709677 2.769 2.679 2.335 1.788 1.472 0.4864 0.451612903225806 2.364 2.288 2.037 1.66 1.423 0.485 0.483870967741936 2.106 2.038 1.942 1.622 1.354 0.4543 0.516129032258065 1.692 1.642 1.475 1.165 0.9756 0.3429 0.548387096774194 1.646 1.592 1.441 1.137 0.9667 0.3275 0.580645161290323 1.454 1.413 1.235 1.118 0.9163 0.3047 0.612903225806452 1.366 1.322 1.208 0.989 0.8202 0.2846 0.645161290322581 1.329 1.286 1.153 0.909 0.7654 0.2819 0.67741935483871 1.233 1.192 1.056 0.8628 0.7257 0.2495 0.709677419354839 1.174 1.135 1.034 0.8416 0.7104 0.2462 0.741935483870968 1.154 1.116 1.01 0.8298 0.7024 0.2449 0.774193548387097 1.108 1.075 0.9724 0.798 0.6801 0.2408 0.806451612903226 0.9493 0.9185 0.8034 0.6938 0.5884 0.1981 0.838709677419355 0.8066 0.78 0.7093 0.5829 0.49 0.1699 0.870967741935484 0.6998 0.6769 0.5904 0.4905 0.4281 0.1554 0.903225806451613 0.6588 0.6369 0.5715 0.4519 0.3955 0.1441 0.935483870967742 0.5477 0.5309 0.4871 0.4479 0.3872 0.1341 0.967741935483871 0.5363 0.5188 0.4679 0.3896 0.3452 0.1208

0.1 7.2873 7.1249 6.3157 4.7689 3.9028 1.2404 Average of yearly averages: 0.550383333333333

Inputs generated by pe5.pl - Novemeber 2006

Data used for this run: Output File: 2MScot Metfile: w03940.dvf PRZM scenario: MScottonSTD.txt

# 39 EXAMS environment file: ir298.exv Chemical Name: pyroxasulfone Description Variable Name Value Units Comments Molecular weight mwt 367 g/mol Henry's Law Const. henry 2.65E-9 atm-m^3/mol Vapor Pressure vapr 1.8E-8 torr Solubility sol 3.49 mg/L Kd Kd mg/L Koc Koc 94.75 mg/L Photolysis half-life kdp days Half-life Aerobic Aquatic Metabolism kbacw 270 days Halfife Anaerobic Aquatic Metabolism kbacs 157 days Halfife Aerobic Soil Metabolism asm 1055 days Halfife Hydrolysis: pH 7 days Half-life Method: CAM 2 integer See PRZM manual Incorporation Depth: DEPI cm Application Rate: TAPP 0.0883 kg/ha Application Efficiency: APPEFF 0.95 fraction Spray Drift DRFT 0.094 fraction of application rate applied to pond Application Date Date 1-4 dd/mm or dd/mmm or dd-mm or dd-mmm Record 17: FILTRA IPSCND 1

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)

Preplant, Ground, 1 application stored as 3MScot.out Chemical: pyroxasulfone PRZM environment: MScottonSTD.txt modified Tueday, 29 May 2007 at 12:57:52 EXAMS environment: ir298.exv modified Tueday, 26 August 2008 at 05:14:08 Metfile: w03940.dvf modified Tueday, 26 August 2008 at 05:14:14 Water segment concentrations (ppb)

Year Peak 96 hr 21 Day 60 Day 90 Day Yearly 1961 1.268 1.227 1.073 0.9368 0.797 0.2665 1962 11.26 11.02 9.682 7.564 6.256 1.993 1963 1.845 1.784 1.603 1.268 1.069 0.3901 1964 8.839 8.547 7.83 5.96 4.884 1.547 1965 0.9026 0.873 0.7615 0.578 0.4908 0.1868 1966 2.383 2.312 2.08 1.576 1.292 0.4233 1967 3.395 3.287 2.924 2.368 2.034 0.6892 1968 6.204 6.031 5.313 4.145 3.414 1.097 1969 3.962 3.832 3.34 2.555 2.104 0.6911 1970 1.075 1.039 0.9351 0.7768 0.6458 0.2249 1971 5.209 5.039 4.569 3.488 2.86 0.9535 1972 0.8784 0.8493 0.7591 0.6467 0.551 0.2036 1973 6.052 5.922 5.207 3.945 3.311 1.072 1974 8.278 8.008 7.179 5.45 4.47 1.444 1975 1.888 1.827 1.666 1.371 1.138 0.3936 1976 1.645 1.591 1.452 1.173 0.9921 0.342 1977 7.162 6.926 6.117 4.759 3.922 1.25 1978 2.309 2.234 2.026 1.635 1.357 0.4571 1979 6.449 6.271 5.574 4.482 3.725 1.203 1980 10.81 10.58 9.35 7.044 5.756 1.824 1981 1.669 1.614 1.426 1.126 0.9555 0.3375 1982 5.512 5.332 4.716 3.545 2.901 0.9291 1983 10.91 10.67 9.536 7.259 5.965 1.932 1984 2.965 2.869 2.733 2.294 1.916 0.6439 1985 1.531 1.482 1.343 1.18 0.9947 0.3353 1986 0.661 0.6395 0.5804 0.4925 0.4284 0.1525 1987 0.7218 0.6984 0.6397 0.5693 0.5025 0.172 1988 8.72 8.436 7.433 6.07 5.034 1.609 1989 2.054 1.996 1.745 1.589 1.367 0.4797 1990 1.6 1.548 1.403 1.113 0.9367 0.3293

Sorted results

# 40 Prob. Peak 96 hr 21 Day 60 Day 90 Day Yearly 0.032258064516129 11.26 11.02 9.682 7.564 6.256 1.993 0.0645161290322581 10.91 10.67 9.536 7.259 5.965 1.932 0.0967741935483871 10.81 10.58 9.35 7.044 5.756 1.824 0.129032258064516 8.839 8.547 7.83 6.07 5.034 1.609 0.161290322580645 8.72 8.436 7.433 5.96 4.884 1.547 0.193548387096774 8.278 8.008 7.179 5.45 4.47 1.444 0.225806451612903 7.162 6.926 6.117 4.759 3.922 1.25 0.258064516129032 6.449 6.271 5.574 4.482 3.725 1.203 0.290322580645161 6.204 6.031 5.313 4.145 3.414 1.097 0.32258064516129 6.052 5.922 5.207 3.945 3.311 1.072 0.354838709677419 5.512 5.332 4.716 3.545 2.901 0.9535 0.387096774193548 5.209 5.039 4.569 3.488 2.86 0.9291 0.419354838709677 3.962 3.832 3.34 2.555 2.104 0.6911 0.451612903225806 3.395 3.287 2.924 2.368 2.034 0.6892 0.483870967741936 2.965 2.869 2.733 2.294 1.916 0.6439 0.516129032258065 2.383 2.312 2.08 1.635 1.367 0.4797 0.548387096774194 2.309 2.234 2.026 1.589 1.357 0.4571 0.580645161290323 2.054 1.996 1.745 1.576 1.292 0.4233 0.612903225806452 1.888 1.827 1.666 1.371 1.138 0.3936 0.645161290322581 1.845 1.784 1.603 1.268 1.069 0.3901 0.67741935483871 1.669 1.614 1.452 1.18 0.9947 0.342 0.709677419354839 1.645 1.591 1.426 1.173 0.9921 0.3375 0.741935483870968 1.6 1.548 1.403 1.126 0.9555 0.3353 0.774193548387097 1.531 1.482 1.343 1.113 0.9367 0.3293 0.806451612903226 1.268 1.227 1.073 0.9368 0.797 0.2665 0.838709677419355 1.075 1.039 0.9351 0.7768 0.6458 0.2249 0.870967741935484 0.9026 0.873 0.7615 0.6467 0.551 0.2036 0.903225806451613 0.8784 0.8493 0.7591 0.578 0.5025 0.1868 0.935483870967742 0.7218 0.6984 0.6397 0.5693 0.4908 0.172 0.967741935483871 0.661 0.6395 0.5804 0.4925 0.4284 0.1525

0.1 10.6129 10.3767 9.198 6.9466 5.6838 1.8025 Average of yearly averages: 0.785733333333333

Inputs generated by pe5.pl - Novemeber 2006

Data used for this run: Output File: 3MScot Metfile: w03940.dvf PRZM scenario: MScottonSTD.txt EXAMS environment file: ir298.exv Chemical Name: pyroxasulfone Description Variable Name Value Units Comments Molecular weight mwt 367 g/mol Henry's Law Const. henry 2.65E-9 atm-m^3/mol Vapor Pressure vapr 1.8E-8 torr Solubility sol 3.49 mg/L Kd Kd mg/L Koc Koc 94.75 mg/L Photolysis half-life kdp days Half-life Aerobic Aquatic Metabolism kbacw 270 days Halfife Anaerobic Aquatic Metabolism kbacs 157 days Halfife Aerobic Soil Metabolism asm 1055 days Halfife Hydrolysis: pH 7 days Half-life Method: CAM 2 integer See PRZM manual Incorporation Depth: DEPI cm Application Rate: TAPP 0.1249 kg/ha Application Efficiency: APPEFF 0.99 fraction Spray Drift DRFT 0.064 fraction of application rate applied to pond Application Date Date 1-4 dd/mm or dd/mmm or dd-mm or dd-mmm Record 17: FILTRA IPSCND 1

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)

Preplant, Ground, 2 applications

# 41 stored as 4MScot.out Chemical: pyroxasulfone PRZM environment: MScottonSTD.txt modified Tueday, 29 May 2007 at 12:57:52 EXAMS environment: ir298.exv modified Tueday, 26 August 2008 at 05:14:08 Metfile: w03940.dvf modified Tueday, 26 August 2008 at 05:14:14 Water segment concentrations (ppb)

Year Peak 96 hr 21 Day 60 Day 90 Day Yearly 1961 2.878 2.782 2.419 1.809 1.613 0.5671 1962 11.28 11.04 10.33 8.665 7.301 2.368 1963 5.169 4.998 4.501 3.577 3.032 1.043 1964 9.904 9.58 8.56 7.569 6.375 2.077 1965 1.168 1.129 0.993 0.7888 0.6849 0.2692 1966 6.732 6.533 5.922 4.494 3.685 1.184 1967 8.336 8.074 7.078 5.448 4.48 1.554 1968 7.371 7.198 6.35 5.568 4.798 1.613 1969 19.56 18.92 16.5 12.38 10.12 3.247 1970 2.78 2.687 2.477 2.031 1.714 0.6281 1971 13.23 12.8 11.67 8.92 7.317 2.369 1972 2.168 2.096 1.868 1.576 1.327 0.4833 1973 21.55 21.01 18.58 13.94 11.38 3.647 1974 11.36 11 9.602 7.809 6.535 2.179 1975 5.05 4.941 4.518 3.398 2.887 1.024 1976 3.413 3.3 3.012 2.438 2.061 0.7074 1977 10.45 10.18 9.038 7.284 6.229 2.059 1978 5.132 4.964 4.741 3.755 3.126 1.052 1979 8.065 7.803 7.408 6.385 5.57 1.888 1980 14.71 14.24 12.57 10.52 8.807 2.848 1981 1.805 1.766 1.566 1.454 1.354 0.5184 1982 11.32 10.95 9.688 7.282 5.959 1.897 1983 10.94 10.71 9.772 8.17 7.044 2.384 1984 5.225 5.056 4.651 3.754 3.277 1.133 1985 3.382 3.276 2.935 2.223 1.916 0.6673 1986 1.319 1.275 1.196 0.9711 0.893 0.3313 1987 2.142 2.069 1.859 1.42 1.204 0.4304 1988 11.45 11.08 9.658 8.191 7.011 2.323 1989 6.989 6.832 6.023 4.55 3.723 1.34 1990 6.461 6.251 5.802 4.762 3.94 1.317

Sorted results Prob. Peak 96 hr 21 Day 60 Day 90 Day Yearly 0.032258064516129 21.55 21.01 18.58 13.94 11.38 3.647 0.0645161290322581 19.56 18.92 16.5 12.38 10.12 3.247 0.0967741935483871 14.71 14.24 12.57 10.52 8.807 2.848 0.129032258064516 13.23 12.8 11.67 8.92 7.317 2.384 0.161290322580645 11.45 11.08 10.33 8.665 7.301 2.369 0.193548387096774 11.36 11.04 9.772 8.191 7.044 2.368 0.225806451612903 11.32 11 9.688 8.17 7.011 2.323 0.258064516129032 11.28 10.95 9.658 7.809 6.535 2.179 0.290322580645161 10.94 10.71 9.602 7.569 6.375 2.077 0.32258064516129 10.45 10.18 9.038 7.284 6.229 2.059 0.354838709677419 9.904 9.58 8.56 7.282 5.959 1.897 0.387096774193548 8.336 8.074 7.408 6.385 5.57 1.888 0.419354838709677 8.065 7.803 7.078 5.568 4.798 1.613 0.451612903225806 7.371 7.198 6.35 5.448 4.48 1.554 0.483870967741936 6.989 6.832 6.023 4.762 3.94 1.34 0.516129032258065 6.732 6.533 5.922 4.55 3.723 1.317 0.548387096774194 6.461 6.251 5.802 4.494 3.685 1.184 0.580645161290323 5.225 5.056 4.741 3.755 3.277 1.133 0.612903225806452 5.169 4.998 4.651 3.754 3.126 1.052 0.645161290322581 5.132 4.964 4.518 3.577 3.032 1.043 0.67741935483871 5.05 4.941 4.501 3.398 2.887 1.024 0.709677419354839 3.413 3.3 3.012 2.438 2.061 0.7074 0.741935483870968 3.382 3.276 2.935 2.223 1.916 0.6673 0.774193548387097 2.878 2.782 2.477 2.031 1.714 0.6281 0.806451612903226 2.78 2.687 2.419 1.809 1.613 0.5671 0.838709677419355 2.168 2.096 1.868 1.576 1.354 0.5184 0.870967741935484 2.142 2.069 1.859 1.454 1.327 0.4833 0.903225806451613 1.805 1.766 1.566 1.42 1.204 0.4304 0.935483870967742 1.319 1.275 1.196 0.9711 0.893 0.3313 0.967741935483871 1.168 1.129 0.993 0.7888 0.6849 0.2692

# 42 0.1 14.562 14.096 12.48 10.36 8.658 2.8016 Average of yearly averages: 1.50495

Inputs generated by pe5.pl - Novemeber 2006

Data used for this run: Output File: 4MScot Metfile: w03940.dvf PRZM scenario: MScottonSTD.txt EXAMS environment file: ir298.exv Chemical Name: pyroxasulfone Description Variable Name Value Units Comments Molecular weight mwt 367 g/mol Henry's Law Const. henry 2.65E-9 atm-m^3/mol Vapor Pressure vapr 1.8E-8 torr Solubility sol 3.49 mg/L Kd Kd mg/L Koc Koc 94.75 mg/L Photolysis half-life kdp days Half-life Aerobic Aquatic Metabolism kbacw 270 days Halfife Anaerobic Aquatic Metabolism kbacs 157 days Halfife Aerobic Soil Metabolism asm 1055 days Halfife Hydrolysis: pH 7 days Half-life Method: CAM 2 integer See PRZM manual Incorporation Depth: DEPI cm Application Rate: TAPP 0.1249 kg/ha Application Efficiency: APPEFF 0.99 fraction Spray Drift DRFT 0.064 fraction of application rate applied to pond Application Date Date 1-4 dd/mm or dd/mmm or dd-mm or dd-mmm Interval 1 interval 14 days Set to 0 or delete line for single app. app. rate 1 apprate 0.1249 kg/ha Record 17: FILTRA IPSCND 1

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)

Post Plant, Ground, 1 application stored as 5MScot.out Chemical: pyroxasulfone PRZM environment: MScottonSTD.txt modified Tueday, 29 May 2007 at 12:57:52 EXAMS environment: ir298.exv modified Tueday, 26 August 2008 at 05:14:08 Metfile: w03940.dvf modified Tueday, 26 August 2008 at 05:14:14 Water segment concentrations (ppb)

Year Peak 96 hr 21 Day 60 Day 90 Day Yearly 1961 0.3472 0.3355 0.3029 0.2661 0.237 0.07943 1962 0.7181 0.6954 0.6232 0.4701 0.399 0.1356 1963 2.599 2.508 2.334 1.973 1.638 0.5358 1964 1.068 1.031 0.8911 0.6768 0.5575 0.2128 1965 0.3727 0.36 0.3349 0.2932 0.2517 0.08894 1966 6.225 6.056 5.436 4.057 3.307 1.039 1967 4.045 3.911 3.45 2.592 2.126 0.7168 1968 2.794 2.701 2.344 1.874 1.551 0.5146 1969 0.6398 0.6175 0.534 0.4572 0.3997 0.1582 1970 1.067 1.039 0.9048 0.6768 0.5537 0.1898 1971 0.6236 0.602 0.5269 0.4115 0.3647 0.1294 1972 0.9132 0.8815 0.7623 0.5715 0.4704 0.1691 1973 1.825 1.791 1.606 1.191 0.97 0.315 1974 1.422 1.373 1.191 0.8822 0.7358 0.2562 1975 2.998 2.898 2.564 2.019 1.666 0.5369 1976 4.872 4.705 4.347 3.269 2.672 0.8569 1977 1.818 1.753 1.513 1.274 1.087 0.3954 1978 3.167 3.061 2.722 2.048 1.675 0.5402 1979 2.91 2.81 2.434 1.883 1.556 0.5213 1980 6.979 6.766 6.112 4.563 3.716 1.172 1981 5.969 5.77 5.181 3.876 3.158 1.022

# 43 1982 3.417 3.297 2.871 2.129 1.733 0.5908 1983 7.666 7.465 6.746 5.156 4.221 1.347 1984 1.722 1.665 1.526 1.233 1.03 0.3739 1985 0.7511 0.7251 0.6337 0.5313 0.443 0.1719 1986 3.458 3.372 3.036 2.399 1.971 0.6266 1987 3.274 3.177 2.817 2.082 1.694 0.5659 1988 0.9971 0.962 0.8304 0.6475 0.5422 0.2248 1989 8.514 8.24 7.225 5.464 4.472 1.417 1990 1.317 1.272 1.114 0.862 0.7158 0.2797

Sorted results Prob. Peak 96 hr 21 Day 60 Day 90 Day Yearly 0.032258064516129 8.514 8.24 7.225 5.464 4.472 1.417 0.0645161290322581 7.666 7.465 6.746 5.156 4.221 1.347 0.0967741935483871 6.979 6.766 6.112 4.563 3.716 1.172 0.129032258064516 6.225 6.056 5.436 4.057 3.307 1.039 0.161290322580645 5.969 5.77 5.181 3.876 3.158 1.022 0.193548387096774 4.872 4.705 4.347 3.269 2.672 0.8569 0.225806451612903 4.045 3.911 3.45 2.592 2.126 0.7168 0.258064516129032 3.458 3.372 3.036 2.399 1.971 0.6266 0.290322580645161 3.417 3.297 2.871 2.129 1.733 0.5908 0.32258064516129 3.274 3.177 2.817 2.082 1.694 0.5659 0.354838709677419 3.167 3.061 2.722 2.048 1.675 0.5402 0.387096774193548 2.998 2.898 2.564 2.019 1.666 0.5369 0.419354838709677 2.91 2.81 2.434 1.973 1.638 0.5358 0.451612903225806 2.794 2.701 2.344 1.883 1.556 0.5213 0.483870967741936 2.599 2.508 2.334 1.874 1.551 0.5146 0.516129032258065 1.825 1.791 1.606 1.274 1.087 0.3954 0.548387096774194 1.818 1.753 1.526 1.233 1.03 0.3739 0.580645161290323 1.722 1.665 1.513 1.191 0.97 0.315 0.612903225806452 1.422 1.373 1.191 0.8822 0.7358 0.2797 0.645161290322581 1.317 1.272 1.114 0.862 0.7158 0.2562 0.67741935483871 1.068 1.039 0.9048 0.6768 0.5575 0.2248 0.709677419354839 1.067 1.031 0.8911 0.6768 0.5537 0.2128 0.741935483870968 0.9971 0.962 0.8304 0.6475 0.5422 0.1898 0.774193548387097 0.9132 0.8815 0.7623 0.5715 0.4704 0.1719 0.806451612903226 0.7511 0.7251 0.6337 0.5313 0.443 0.1691 0.838709677419355 0.7181 0.6954 0.6232 0.4701 0.3997 0.1582 0.870967741935484 0.6398 0.6175 0.534 0.4572 0.399 0.1356 0.903225806451613 0.6236 0.602 0.5269 0.4115 0.3647 0.1294 0.935483870967742 0.3727 0.36 0.3349 0.2932 0.2517 0.08894 0.967741935483871 0.3472 0.3355 0.3029 0.2661 0.237 0.07943

0.1 6.9036 6.695 6.0444 4.5124 3.6751 1.1587 Average of yearly averages: 0.506099

Inputs generated by pe5.pl - Novemeber 2006

Data used for this run: Output File: 5MScot Metfile: w03940.dvf PRZM scenario: MScottonSTD.txt EXAMS environment file: ir298.exv Chemical Name: pyroxasulfone Description Variable Name Value Units Comments Molecular weight mwt 367 g/mol Henry's Law Const. henry 2.65E-9 atm-m^3/mol Vapor Pressure vapr 1.8E-8 torr Solubility sol 3.49 mg/L Kd Kd mg/L Koc Koc 94.75 mg/L Photolysis half-life kdp days Half-life Aerobic Aquatic Metabolism kbacw 270 days Halfife Anaerobic Aquatic Metabolism kbacs 157 days Halfife Aerobic Soil Metabolism asm 1055 days Halfife Hydrolysis: pH 7 days Half-life Method: CAM 2 integer See PRZM manual Incorporation Depth: DEPI cm Application Rate: TAPP 0.1249 kg/ha Application Efficiency: APPEFF 0.99 fraction Spray Drift DRFT 0.064 fraction of application rate applied to pond

# 44 Application Date Date 15-5 dd/mm or dd/mmm or dd-mm or dd-mmm Record 17: FILTRA IPSCND 1

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)

Post Plant, Ground, 2 applications stored as 6MScot.out Chemical: pyroxasulfone PRZM environment: MScottonSTD.txt modified Tueday, 29 May 2007 at 12:57:52 EXAMS environment: ir298.exv modified Tueday, 26 August 2008 at 05:14:08 Metfile: w03940.dvf modified Tueday, 26 August 2008 at 05:14:14 Water segment concentrations (ppb)

Year Peak 96 hr 21 Day 60 Day 90 Day Yearly 1961 1.008 0.9733 0.8561 0.688 0.5945 0.2036 1962 1.51 1.463 1.311 0.9898 0.8211 0.2776 1963 5.463 5.273 4.865 4.135 3.435 1.116 1964 2.606 2.516 2.176 1.664 1.372 0.5005 1965 0.8865 0.8561 0.8164 0.6852 0.5819 0.2151 1966 6.23 6.061 5.58 4.284 3.536 1.137 1967 5.878 5.675 4.915 4.095 3.49 1.189 1968 2.964 2.865 2.573 2.046 1.723 0.6041 1969 1.405 1.356 1.172 1.013 0.8797 0.3234 1970 2.217 2.158 1.88 1.406 1.151 0.3853 1971 1.961 1.893 1.669 1.328 1.102 0.3842 1972 1.865 1.8 1.557 1.168 0.9626 0.3442 1973 2.043 1.977 1.797 1.366 1.131 0.3869 1974 6.97 6.732 5.836 4.324 3.533 1.141 1975 3.106 3.007 2.867 2.553 2.162 0.7457 1976 6.943 6.706 5.813 4.585 3.803 1.232 1977 3.743 3.61 3.115 2.628 2.243 0.7887 1978 4.323 4.177 3.614 2.934 2.507 0.8494 1979 8.434 8.144 7.053 5.492 4.549 1.48 1980 7.021 6.807 6.252 5.058 4.295 1.442 1981 9.498 9.166 7.933 6.43 5.515 1.844 1982 7.422 7.163 6.238 4.626 3.767 1.27 1983 7.696 7.494 6.866 5.367 4.422 1.45 1984 3.15 3.072 2.681 2.103 1.908 0.7058 1985 1.752 1.691 1.478 1.256 1.05 0.394 1986 15.28 14.76 13.24 9.879 8.058 2.617 1987 9.409 9.102 8.094 5.989 4.873 1.637 1988 2.263 2.184 1.885 1.48 1.244 0.5206 1989 8.998 8.692 8.008 6.995 5.867 1.911 1990 3.656 3.531 3.052 2.401 1.99 0.7114

Sorted results Prob. Peak 96 hr 21 Day 60 Day 90 Day Yearly 0.032258064516129 15.28 14.76 13.24 9.879 8.058 2.617 0.0645161290322581 9.498 9.166 8.094 6.995 5.867 1.911 0.0967741935483871 9.409 9.102 8.008 6.43 5.515 1.844 0.129032258064516 8.998 8.692 7.933 5.989 4.873 1.637 0.161290322580645 8.434 8.144 7.053 5.492 4.549 1.48 0.193548387096774 7.696 7.494 6.866 5.367 4.422 1.45 0.225806451612903 7.422 7.163 6.252 5.058 4.295 1.442 0.258064516129032 7.021 6.807 6.238 4.626 3.803 1.27 0.290322580645161 6.97 6.732 5.836 4.585 3.767 1.232 0.32258064516129 6.943 6.706 5.813 4.324 3.536 1.189 0.354838709677419 6.23 6.061 5.58 4.284 3.533 1.141 0.387096774193548 5.878 5.675 4.915 4.135 3.49 1.137 0.419354838709677 5.463 5.273 4.865 4.095 3.435 1.116 0.451612903225806 4.323 4.177 3.614 2.934 2.507 0.8494 0.483870967741936 3.743 3.61 3.115 2.628 2.243 0.7887 0.516129032258065 3.656 3.531 3.052 2.553 2.162 0.7457 0.548387096774194 3.15 3.072 2.867 2.401 1.99 0.7114 0.580645161290323 3.106 3.007 2.681 2.103 1.908 0.7058 0.612903225806452 2.964 2.865 2.573 2.046 1.723 0.6041

# 45 0.645161290322581 2.606 2.516 2.176 1.664 1.372 0.5206 0.67741935483871 2.263 2.184 1.885 1.48 1.244 0.5005 0.709677419354839 2.217 2.158 1.88 1.406 1.151 0.394 0.741935483870968 2.043 1.977 1.797 1.366 1.131 0.3869 0.774193548387097 1.961 1.893 1.669 1.328 1.102 0.3853 0.806451612903226 1.865 1.8 1.557 1.256 1.05 0.3842 0.838709677419355 1.752 1.691 1.478 1.168 0.9626 0.3442 0.870967741935484 1.51 1.463 1.311 1.013 0.8797 0.3234 0.903225806451613 1.405 1.356 1.172 0.9898 0.8211 0.2776 0.935483870967742 1.008 0.9733 0.8561 0.688 0.5945 0.2151 0.967741935483871 0.8865 0.8561 0.8164 0.6852 0.5819 0.2036

0.1 9.3679 9.061 8.0005 6.3859 5.4508 1.8233 Average of yearly averages: 0.926883333333333

Inputs generated by pe5.pl - Novemeber 2006

Data used for this run: Output File: 6MScot Metfile: w03940.dvf PRZM scenario: MScottonSTD.txt EXAMS environment file: ir298.exv Chemical Name: pyroxasulfone Description Variable Name Value Units Comments Molecular weight mwt 367 g/mol Henry's Law Const. henry 2.65E-9 atm-m^3/mol Vapor Pressure vapr 1.8E-8 torr Solubility sol 3.49 mg/L Kd Kd mg/L Koc Koc 94.75 mg/L Photolysis half-life kdp days Half-life Aerobic Aquatic Metabolism kbacw 270 days Halfife Anaerobic Aquatic Metabolism kbacs 157 days Halfife Aerobic Soil Metabolism asm 1055 days Halfife Hydrolysis: pH 7 days Half-life Method: CAM 2 integer See PRZM manual Incorporation Depth: DEPI cm Application Rate: TAPP 0.1249 kg/ha Application Efficiency: APPEFF 0.99 fraction Spray Drift DRFT 0.064 fraction of application rate applied to pond Application Date Date 15-5 dd/mm or dd/mmm or dd-mm or dd-mmm Interval 1 interval 14 days Set to 0 or delete line for single app. app. rate 1 apprate 0.1249 kg/ha Record 17: FILTRA IPSCND 1

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)

Fall, Ground stored as 7MScot.out Chemical: pyroxasulfone PRZM environment: MScottonSTD.txt modified Tueday, 29 May 2007 at 12:57:52 EXAMS environment: ir298.exv modified Tueday, 26 August 2008 at 05:14:08 Metfile: w03940.dvf modified Tueday, 26 August 2008 at 05:14:14 Water segment concentrations (ppb)

Year Peak 96 hr 21 Day 60 Day 90 Day Yearly 1961 5.718 5.624 5.089 3.843 2.612 0.6441 1962 2.828 2.743 2.422 1.859 1.548 0.6225 1963 2.334 2.259 2.012 1.239 0.88 0.2896 1964 2.16 2.091 1.87 1.367 0.9978 0.4964 1965 1.284 1.245 1.097 0.8414 0.7014 0.3365 1966 0.9364 0.9069 0.8489 0.7199 0.5813 0.2326 1967 3.154 3.099 2.809 2.408 1.888 0.5537 1968 2.076 2.02 1.804 1.379 0.9767 0.4791 1969 2.287 2.217 1.996 1.765 1.435 0.5212 1970 7.595 7.346 6.522 5.07 3.843 1.236

# 46 1971 2.526 2.451 2.166 1.672 1.398 0.7355 1972 2.987 2.889 2.621 2.117 1.589 0.6711 1973 1.929 1.868 1.669 1.429 1.137 0.4903 1974 2.249 2.176 1.899 1.508 1.181 0.4411 1975 14.6 14.12 12.33 9.454 7.274 1.932 1976 4.439 4.309 3.813 2.944 2.458 0.9369 1977 2.989 2.893 2.621 2.211 1.527 0.4566 1978 1.557 1.509 1.425 0.9888 0.8264 0.4461 1979 2.498 2.454 2.188 1.815 1.29 0.511 1980 3.033 2.935 2.749 2.153 1.659 0.6583 1981 5.673 5.487 4.792 3.653 2.667 0.8551 1982 1.986 1.927 1.702 1.312 1.095 0.5226 1983 2.682 2.616 2.355 1.92 1.5 0.5214 1984 7.906 7.727 6.773 5.147 3.907 1.229 1985 2.565 2.49 2.205 1.707 1.428 0.7155 1986 3.7 3.582 3.251 2.586 1.924 0.5935 1987 3.51 3.398 3.067 2.062 1.433 0.6444 1988 2.865 2.787 2.521 1.99 1.518 0.7033 1989 5.738 5.554 4.967 3.657 2.494 0.7997 1990 2.56 2.482 2.188 1.677 1.395 0.7017

Sorted results Prob. Peak 96 hr 21 Day 60 Day 90 Day Yearly 0.032258064516129 14.6 14.12 12.33 9.454 7.274 1.932 0.0645161290322581 7.906 7.727 6.773 5.147 3.907 1.236 0.0967741935483871 7.595 7.346 6.522 5.07 3.843 1.229 0.129032258064516 5.738 5.624 5.089 3.843 2.667 0.9369 0.161290322580645 5.718 5.554 4.967 3.657 2.612 0.8551 0.193548387096774 5.673 5.487 4.792 3.653 2.494 0.7997 0.225806451612903 4.439 4.309 3.813 2.944 2.458 0.7355 0.258064516129032 3.7 3.582 3.251 2.586 1.924 0.7155 0.290322580645161 3.51 3.398 3.067 2.408 1.888 0.7033 0.32258064516129 3.154 3.099 2.809 2.211 1.659 0.7017 0.354838709677419 3.033 2.935 2.749 2.153 1.589 0.6711 0.387096774193548 2.989 2.893 2.621 2.117 1.548 0.6583 0.419354838709677 2.987 2.889 2.621 2.062 1.527 0.6444 0.451612903225806 2.865 2.787 2.521 1.99 1.518 0.6441 0.483870967741936 2.828 2.743 2.422 1.92 1.5 0.6225 0.516129032258065 2.682 2.616 2.355 1.859 1.435 0.5935 0.548387096774194 2.565 2.49 2.205 1.815 1.433 0.5537 0.580645161290323 2.56 2.482 2.188 1.765 1.428 0.5226 0.612903225806452 2.526 2.454 2.188 1.707 1.398 0.5214 0.645161290322581 2.498 2.451 2.166 1.677 1.395 0.5212 0.67741935483871 2.334 2.259 2.012 1.672 1.29 0.511 0.709677419354839 2.287 2.217 1.996 1.508 1.181 0.4964 0.741935483870968 2.249 2.176 1.899 1.429 1.137 0.4903 0.774193548387097 2.16 2.091 1.87 1.379 1.095 0.4791 0.806451612903226 2.076 2.02 1.804 1.367 0.9978 0.4566 0.838709677419355 1.986 1.927 1.702 1.312 0.9767 0.4461 0.870967741935484 1.929 1.868 1.669 1.239 0.88 0.4411 0.903225806451613 1.557 1.509 1.425 0.9888 0.8264 0.3365 0.935483870967742 1.284 1.245 1.097 0.8414 0.7014 0.2896 0.967741935483871 0.9364 0.9069 0.8489 0.7199 0.5813 0.2326

0.1 7.4093 7.1738 6.3787 4.9473 3.7254 1.19979 Average of yearly averages: 0.665893333333334

Inputs generated by pe5.pl - Novemeber 2006

Data used for this run: Output File: 7MScot Metfile: w03940.dvf PRZM scenario: MScottonSTD.txt EXAMS environment file: ir298.exv Chemical Name: pyroxasulfone Description Variable Name Value Units Comments Molecular weight mwt 367 g/mol Henry's Law Const. henry 2.65E-9 atm-m^3/mol Vapor Pressure vapr 1.8E-8 torr Solubility sol 3.49 mg/L Kd Kd mg/L

# 47 Koc Koc 94.75 mg/L Photolysis half-life kdp days Half-life Aerobic Aquatic Metabolism kbacw 270 days Halfife Anaerobic Aquatic Metabolism kbacs 157 days Halfife Aerobic Soil Metabolism asm 1055 days Halfife Hydrolysis: pH 7 days Half-life Method: CAM 2 integer See PRZM manual Incorporation Depth: DEPI cm Application Rate: TAPP 0.1249 kg/ha Application Efficiency: APPEFF 0.99 fraction Spray Drift DRFT 0.064 fraction of application rate applied to pond Application Date Date 15-10 dd/mm or dd/mmm or dd-mm or dd-mmm Record 17: FILTRA IPSCND 1

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)

Fall, Aerial

stored as 8MScot.out Chemical: pyroxasulfone PRZM environment: MScottonSTD.txt modified Tueday, 29 May 2007 at 12:57:52 EXAMS environment: ir298.exv modified Tueday, 26 August 2008 at 05:14:08 Metfile: w03940.dvf modified Tueday, 26 August 2008 at 05:14:14 Water segment concentrations (ppb)

Year Peak 96 hr 21 Day 60 Day 90 Day Yearly 1961 3.944 3.879 3.508 2.657 1.824 0.4497 1962 1.949 1.891 1.669 1.282 1.067 0.4407 1963 1.635 1.583 1.409 0.8909 0.6487 0.2149 1964 1.517 1.469 1.313 0.9778 0.7289 0.3552 1965 0.9015 0.8742 0.7703 0.5911 0.4928 0.2467 1966 0.695 0.6732 0.6337 0.5527 0.4465 0.1763 1967 2.223 2.183 1.994 1.701 1.333 0.3943 1968 1.479 1.439 1.286 0.9863 0.7147 0.3436 1969 1.597 1.548 1.406 1.248 1.026 0.3721 1970 5.25 5.079 4.507 3.502 2.659 0.857 1971 1.744 1.693 1.508 1.154 0.9653 0.5173 1972 2.121 2.051 1.858 1.496 1.13 0.4735 1973 1.384 1.34 1.2 1.035 0.8227 0.3511 1974 1.631 1.578 1.377 1.09 0.8533 0.3175 1975 10.01 9.678 8.453 6.479 4.985 1.329 1976 3.042 2.953 2.613 2.017 1.684 0.654 1977 2.103 2.036 1.842 1.55 1.088 0.3283 1978 1.1 1.066 1.01 0.7043 0.5777 0.3212 1979 1.751 1.721 1.533 1.282 0.9273 0.3652 1980 2.158 2.088 1.95 1.525 1.178 0.4652 1981 3.938 3.809 3.326 2.535 1.861 0.5986 1982 1.378 1.337 1.181 0.9105 0.7601 0.3729 1983 1.876 1.83 1.649 1.363 1.069 0.3722 1984 5.456 5.333 4.675 3.552 2.702 0.8519 1985 1.77 1.718 1.522 1.178 0.9854 0.5037 1986 2.582 2.5 2.27 1.813 1.357 0.4211 1987 2.444 2.367 2.135 1.45 1.024 0.4557 1988 2.04 1.985 1.793 1.413 1.082 0.4956 1989 3.963 3.836 3.43 2.531 1.744 0.5608 1990 1.767 1.714 1.51 1.158 0.9631 0.4945

Sorted results Prob. Peak 96 hr 21 Day 60 Day 90 Day Yearly 0.032258064516129 10.01 9.678 8.453 6.479 4.985 1.329 0.0645161290322581 5.456 5.333 4.675 3.552 2.702 0.857 0.0967741935483871 5.25 5.079 4.507 3.502 2.659 0.8519 0.129032258064516 3.963 3.879 3.508 2.657 1.861 0.654 0.161290322580645 3.944 3.836 3.43 2.535 1.824 0.5986

# 48 0.193548387096774 3.938 3.809 3.326 2.531 1.744 0.5608 0.225806451612903 3.042 2.953 2.613 2.017 1.684 0.5173 0.258064516129032 2.582 2.5 2.27 1.813 1.357 0.5037 0.290322580645161 2.444 2.367 2.135 1.701 1.333 0.4956 0.32258064516129 2.223 2.183 1.994 1.55 1.178 0.4945 0.354838709677419 2.158 2.088 1.95 1.525 1.13 0.4735 0.387096774193548 2.121 2.051 1.858 1.496 1.088 0.4652 0.419354838709677 2.103 2.036 1.842 1.45 1.082 0.4557 0.451612903225806 2.04 1.985 1.793 1.413 1.069 0.4497 0.483870967741936 1.949 1.891 1.669 1.363 1.067 0.4407 0.516129032258065 1.876 1.83 1.649 1.282 1.026 0.4211 0.548387096774194 1.77 1.721 1.533 1.282 1.024 0.3943 0.580645161290323 1.767 1.718 1.522 1.248 0.9854 0.3729 0.612903225806452 1.751 1.714 1.51 1.178 0.9653 0.3722 0.645161290322581 1.744 1.693 1.508 1.158 0.9631 0.3721 0.67741935483871 1.635 1.583 1.409 1.154 0.9273 0.3652 0.709677419354839 1.631 1.578 1.406 1.09 0.8533 0.3552 0.741935483870968 1.597 1.548 1.377 1.035 0.8227 0.3511 0.774193548387097 1.517 1.469 1.313 0.9863 0.7601 0.3436 0.806451612903226 1.479 1.439 1.286 0.9778 0.7289 0.3283 0.838709677419355 1.384 1.34 1.2 0.9105 0.7147 0.3212 0.870967741935484 1.378 1.337 1.181 0.8909 0.6487 0.3175 0.903225806451613 1.1 1.066 1.01 0.7043 0.5777 0.2467 0.935483870967742 0.9015 0.8742 0.7703 0.5911 0.4928 0.2149 0.967741935483871 0.695 0.6732 0.6337 0.5527 0.4465 0.1763

0.1 5.1213 4.959 4.4071 3.4175 2.5792 0.83211 Average of yearly averages: 0.469993333333333

Inputs generated by pe5.pl - Novemeber 2006

Data used for this run: Output File: 8MScot Metfile: w03940.dvf PRZM scenario: MScottonSTD.txt EXAMS environment file: ir298.exv Chemical Name: pyroxasulfone Description Variable Name Value Units Comments Molecular weight mwt 367 g/mol Henry's Law Const. henry 2.65E-9 atm-m^3/mol Vapor Pressure vapr 1.8E-8 torr Solubility sol 3.49 mg/L Kd Kd mg/L Koc Koc 94.75 mg/L Photolysis half-life kdp days Half-life Aerobic Aquatic Metabolism kbacw 270 days Halfife Anaerobic Aquatic Metabolism kbacs 157 days Halfife Aerobic Soil Metabolism asm 1055 days Halfife Hydrolysis: pH 7 days Half-life Method: CAM 2 integer See PRZM manual Incorporation Depth: DEPI cm Application Rate: TAPP 0.0883 kg/ha Application Efficiency: APPEFF 0.95 fraction Spray Drift DRFT 0.094 fraction of application rate applied to pond Application Date Date 15-10 dd/mm or dd/mmm or dd-mm or dd-mmm Record 17: FILTRA IPSCND 1

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)

# 49 SCI-GROW

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:pyroxasulfone time is 1/17/2013 16:33: 2

------------------------------------------------------------------------ Application Number of Total Use Koc Soil Aerobic rate (lb/acre) applications (lb/acre/yr) (ml/g) metabolism (days)

------------------------------------------------------------------------ 0.112 2.0 0.223 9.48E+01 1055.0

------------------------------------------------------------------------ groundwater screening cond (ppb) = 6.24E+00 ************************************************************************

PRZM-GW

FL CITUS SCENARIO

FL POTATO SCENARIO

GA SCENARIO

# 50 NC SCENARIO

MD SCENARIO

# 51 WI SCENARIO