# Page 1 of25 U. S. ENVIRONMENTAL PROTECTION AGENCY

Washington, D.C. 20460

OFFICE OF CHEMICAL SAFETY AND POLLUTION PREVENTION 

# PC Code:060109 DP Barcode:373378

376634

May20,2010

MEMORANDUM

SUBJECT: Tier II Drinking Water Exposure Assessment to Establish a Tolerance of

Thiamethoxam on Peanutand Alfalfa Seeds

TO: Dennis McNeilly, Chemist/Risk Assessor

Christina Swartz, Branch Chief Julie Chao, Risk Manager Reviewer Venus Eagle, Risk Manager

FROM: ChristopherM.Koper, Chemist

Environmental RiskBranch I Environmental Fate and Effects Division

THROUGH: Anita Pease
,Acting BranchChief

Brian Anderson, Risk Assessment Process Leader Faruque Khan
, Senior Fate Scientist, Secondary Reviewer Environmental Risk Branch I Environmental Fate and EffectsDivision

A Tier IIscreening

-level drinking water assessmentwas conductedforthe proposed new use of thiamethoxam on peanutand alfalfaseeds submittedby Syngenta Crop Protection,Inc. Tolerances for leafy

vegetables, dry

bulb onions and cornwere also included in this assessment

after review of thesubmittedlabels showedincreasedratesthatwerenot previously assessed for these crops.

Thiamethoxamis a systemic neonicotinoidinsecticide thatcan be applied as a seed treatment for various crops. This assessment was based on information contained in theCruiser 

# Insecticide (EPA Reg. No. 100

-941) andCruiser

# PD (EPA Reg. No. 100

-RGAL) labels

. Theestimated drinking water concentrations (EDWCs) are based on the maximum proposed application rates specified in the product labels

.The EDWCs for the human health risk assessment arepresented inTable 1

.

# Page2 of25

For surface water, theEDWCsforthecrops modeled in this assessmentdid notexceedthe previous EDWCs for ricereported in thepreviousdrinking water assessment (D363202) dated 07 April 2009

.The reportedacute concentration of131.77 μg/L
,annual mean(chronic) concentration of 11.31 μg/Land the highest 30 year annual average concentration of 11.31 μg/L from the rice modelare higher than thereportedEDWCs forvarioususes inTable 1

. Therefore, the current EDWCs for surface waterdo not supersede the drinking water concentrations previouslyestimatedfor this chemical.

For groundwater, based on thehighest annual use rate f ordry bulb onion(0.300 lbs. a.i./acre) and the proposeduse rates forpeanut seed(0.080 lbs. a.i./acre)andalfalfaseed(0.022 lbs. a.i./acre), the SCI

-GROW model concentrations of thiamethoxamwere4.66 μg/L, 1.24 μg/Land 0.34 μg/L, respectively(Table 1). Thesevalueswere compared to4.14 μg/Lreportedfor grapes inthepreviousdrinking waterassessment (D329467) dated 10 January 2007. Itis important to
notethat the predicted groundwater value for grapes is a correctedvaluedescribedin detailin a previous drinking water assessment (D368072) dated 02 February 2010. Since 4.66 μg/L for dry bulb onions is greater than 4.14 μg/L, the current EDWC supersedes the previously recommended EDWC for groundwater.

In conclusion, the current EDWCs for surface water do notsupersede the estimated drinking water concentrations previouslyderivedfor thiamethoxam.The current EDWC for groundwater supersedesthe estimated drinking water concentration previouslyestimatedfor this chemical

. Therefore, therecommended EWDC for groundwater is4.66 μg/L

. Table 1ThiamethoxamEstimated Drinking Water Concentrations (EDWCs) for Surface Water and Groundwater Based on Selected Crop Scenarios

# Page3 of25

Monitoring Data Proposed Label Use PRZM/EXAMS

Scenario (first app. date) Application Rate

(interval between applications) 1

-in

-10 year acute (

# μg/L) 1

-in

-10 year

chronic (

# μg/L) 30 year

average (

# μg/L) 

# Surface Water

Peanuts NC Peanuts

(May 9) 1 app. X 0.080 lbs. ai/acre 1.51 0.16 0.05
Alfalfa CA Alfalfa

(January 9) 1 app. X 0.022 lbs. ai/acre 0.37 0.07 0.03
MN Alfalfa (May 25) 1 app. X 0.022 lbs. ai/acre 0.27 0.03 0.02
NC Alfalfa (March 25) 1 app. X 0.022 lbs. ai/acre 0.55 0.08 0.03
PA Alfalfa (March 9) 1 app. X 0.022 lbs. ai/acre 0.37 0.05 0.03
TX Alfalfa (August 25) 1 app. X 0.022 lbs. ai/acre 0.89 0.10 0.05
IL Alfalfa (May 25) 1 app. X 0.022 lbs. ai/acre 0.58 0.06 0.03 Leafy Vegetables CA Lettuce

(Feb. 9) 1 app. X 0.266 lbs. ai/acre 23.78 1 

# 3.68 1 

# 1.29 1


# Dry Bulb Onions CA Onion

(Jan. 9) 1 app. x 0.300 lbs ai/acre 1.57 0.25 0.06
GA Onion (Sept. 8) 1 app. x 0.300 lbs ai/acre 20.45 1.54 0.44
Corn KS Corn

(May 3) 1 app. X 0.210 lbs. ai/acre 11.88 1.34 0.63
MS Corn (April 3) 1 app. X 0.210 lbs. ai/acre 17.93 1.81 0.75

NE Corn (May 18) 1 app. X 0.210 lbs. ai/acre 15.43 1.73 0.70
OHCorn (April 24) 1 app. X 0.210 lbs. ai/acre 12.46 1.50 0.39 

# Groundwater

Peanuts NA 1 app. x 0.080 lbs ai/acre 1.24 1.24 1.24

Alfalfa NA 1 app. x 0.022 lbs ai/acre 0.34 0.34 0.34

Dry Bulb Onion NA 1 app. x 0.300 lbs ai/acre 4.66 1 

# 4.66 1 

# 4.66 1 

# Surface water values denote maximum PCA adjusted EDWC values withPCA factorof 0.87. Seed treatment is the method of application for all crop scenarios with a 2.54 cm. incorporation depth, 100 % application efficiency and 0% spray drift. NA=NotA

pplicable
1

# = Bolded EDWCs are the maximum concentrations predicted by PRZM/EXAMS and SCI

-GROW models

# Page4 of25

Thiamethoxamisnotincluded as one of the analytesmonitored in U.S. surface and groundwater under the USGS’s National Water Quality Assessment (NAWQA) program.

Two small

-scale prospective groundwater (PGW) monitoring studies (MRID 47486201)were initiated in southwest Michigan in June 2001 and southwestern Georgia in the spring of 2002 to determine the potential for the active ingredient thiamethoxam and its degradates (i.e: CGA

322704, CGA

-355190, CGA

-353042, NOA

-404617, NOA

-407475)to reach groundwater when used in a vulnerable hydrogeologic setting.Analy tical datawerecollected from spring 2001 through the 47

-months after treatment (MAT; May 2005) sampling event for the Michigan study and from spring 2002 through 36 months after application (MAA; May 2005) sampling event for the Georgia study. Themonitoringdata demonstrate that concentrations of the analytes of interest have peaked in the groundwater and have either completely dissipated or have leveled off for an extended period of time. Further details concerning this study can be found in the following memorandum (D325449) dated 12 June 2006.

In Michigan, thiamethoxam residues found in soil

-pore water samples clearly peakedat 3.5 μg/L 14 MATand then declined. No quantifiable residues of thiamethoxam > LOQ(0.05 μg/L) were determined in anyof the 3, 6, and 9

-ft lysimeters after the 36, 16, and 41

-MAT sampling events, respectively. By

the 47

-MAT sampling event
, only trace level detections of thiamethoxam were observed in three of the 15

-ft. lysimeterunits (maximum concentration 0.11 μg/L).

In Georgia, thiamethoxam residueswereconfirmed inonlyfour shallow monitoring wells (MW

1S, MW

-3S, MW

-5S, and MW

-8S) during 47 months of sampling. Thiamethoxam residues in groundwater peaked at 43

-MAT, and by 47

-MAT
,residues were confined to two shallow monitoring wells only(maximum concentration 0.12 μg/L). Thiamethoxamwas not detected (LOQ = 0.050 μg/L) inany groundwater samples collected from the deep monitoring wells during 47 months of sampling.

Drinking Water Exposure Modeling

Estimated drinking water concentrations (EDWCs) were generated using EFED’s standard suite of models.Application rates for the proposed new uses on peanut and alfalfa seeds were assessed, based on information provided on the labels. Since there is no standard scenario for alfalfa, the specialty OP (Organophosphate) and NMC (N

-MethylCarbamate) scenarios for alfalfa were utilized.Inaddition, EDWCs for leafy vegetables, dry

bulb onions and corn were also included in this assessment after review of the submitted labels showed increased rates that were not previously

assessed for these crops.

Models

Pesticide Root Zone Model (PRZM v3.12.2, May 12, 2005) and Exposure AnalysisModeling System (EXAMS v2.98.04.06, April 25, 2005) are simulation models coupled with the input PE5.pl shell (PE5, PE Version 5.0, November 15, 2006) to generate EDWCs ofthiamethoxam residues that may

occur in surface water used as drinking water. The PRZM model simulates pesticide movement and transformationon and across the agricultural fieldresultingfrom crop applications. The EXAMS model simulates pesticide loading via runoff, erosion, and spray drift

# Page5 of25

assuming a standard watershed of 172.8 ha that drains into an adjacent standard drinking water index reservoir of 5.26 ha, an average depthof 2.74 m. A more detailed description of the index reservoir watershed can be found in Joneset al

., 1998. The coupled PRZM/EXAMS model and

user’s manuals may

be downloaded from the U.S. Environmental Protection Agency (EPA) Water Models web

-page (USEPA, 2010). Percent CropAreas (PCA)thataccount for the maximum area within a watershed that may be planted with the modeled crop are applied to concentrations predicted by PRZM/EXAMS

. Screening Concentration in Ground Water (SCI

-GROW v2.3, Jul. 29, 2003) is a regression model used as a screening tool to estimate pesticide concentrations found in ground water used as drinking water.The SCI

-GROWmodelwas developed by fitting a linear model to ground water concentrations with the Relative Index of Leaching Potential (RILP) as the independent variable. Ground water concentrations were taken from 90

-day average high concentrations from Prospective Ground Water studies. The RILP is a function of aerobic soil metabolism and the soil

-water partition coefficient. The output of SCI

-GROW represents the concentrations of residuesthat might be expected in shallow unconfined aquifers under sandy soils, which is representative of the ground water most vulnerable to pesticide contamination and likely to serve as a drinking watersource. The SCI

-GROWuser’s manualis currently under development; however, information concerning the model can be found onthe EPA Water Models web

-page (USEPA, 2010).

Input Parameters

Input parameters for the PRZM/EXAMSand SCI

-GROWmodels are listedinTable2 and Table3. Explanations of various model input parameters are discussed below.

Table 2. PRZM/EXAMS Input Parameters forThiamethoxam

. Input Parameter: Value: Comment: Source: Scenario(s): Peanuts: NC Peanuts Alfalfa:CA, MN, NC, PA, TX, IL Alfalfa Leafy Vegetables: CA Lettuce Dry Bulb Onions: CA, GA Onions Corn: KS, MS, NE, OH Corn representativescenarios for each use N/A

Maximum Single Application Rate lbs a.i./A (kg a.i./ha) Peanuts: 0.080 (0.090) Alfalfa: 0

.022 (0.025) Leafy Vegetables:0.266 (0.299) Dry Bulb Onions: 0.300 (0.337) Corn: 0.210 (0.236) proposed rates proposed label

Applications per Year Seed Treatments: Peanuts: 1 Alfalfa: 1 Leafy Vegetables: 1 Dry Bulb Onions: 1 Corn: 1 label directions. Label specifies rates per season. If crops are rotated with those on which thiamethoxam is used, yearly rates may be higher. proposed label

Application Interval (days) N/A (single application only) intervals were selected to reflect labeled application patterns. proposed label

# Page6 of25 Table 2. PRZM/EXAMS Input Parameters forThiamethoxam

. Input Parameter: Value: Comment: Source: Date of Initial Application (scenario/day/month) Peanuts: NC Peanuts: 09

-05

Alfalfa: CA Alfalfa: 09

-01 MN Alfalfa: 25

-05 NC Alfalfa: 25

-03 PA Alfalfa: 09

-03 TX Alfalfa: 25

-08 IL Alfalfa: 25

-05

Leafy Vegetables: CA Lettuce: 09

-02

Dry Bulb Onions: CA Onions: 09

-01 GA Onions: 08

-09

Corn: KS Corn: 03

-05 MS Corn: 03

-04 NE Corn: 18

-05 OH Corn: 24

-04 7 days before crop

emergence was selected for

seed treatment scenarios. Crop Scenarios

Application Method ground (seed treatment) label directions proposed label
CAM Input 4 soil applied, user defined incorporation depth, uniform with depth proposed label

Incorporation Depth (cm.) 2.54 label directions (> 1 in.) proposed label
IPSCND Input 1 remaining pesticide on foliageis converted to surface application to the top soil layer US EPA, 2005

Spray Drift Fraction 0 incorporated seed treatment Inputparameter guidance (USEPA, 2009) Application Efficiency 1.00 seed treatment Input parameter guidance (USEPA, 2009) Molecular Mass (g/mol) 291.7 product chemistry data US EPA, 2007
Vapor Pressure at 25°C (torr) 4.95 x 10-11 

# product chemistry data US EPA, 2007

Henry’s Law Constant (atm

-m3

# /mol) 4.65 x 10-15 

# calculatedfrom volatility and solubility data registrant submitted data

Solubility in Water at 25o

# C (mg/L) 4100 product chemistry data 

# US EPA, 2007

Organic Carbon Partition Coefficient (KOC

# ) (L/kgOC

# ) 70.23 represents the average KOC 

# MRID 44703502

Aerobic Soil Metabolism Half

-life (days) 480.92 represents the 90th

# %

-ile confidence bound on the mean half

-life MRID44703418

MRID44703419 MRID44703501 Aerobic Aquatic Metabolism Half

-life (days) 19.92 represents the 90th

# %

-ile confidence bound on the mean half

-life MRID44715032

# Page7 of25 Table 2. PRZM/EXAMS Input Parameters forThiamethoxam

. Input Parameter: Value: Comment: Source: Anaerobic Aquatic Metabolism Half

-life (days) 43.98 represents the 90th

# %

-ile confidence bound on the mean half

-life 

# MRID 44715029

MRID 44715030 MRID 44715031
Hydrolysis Half

-lives (days) Stable pH 7 MRID44703417 Aqueous Photolysis Half

-life (days) 4.46 represents the 90th

# %

-ile confidence bound on the mean half

-life MRID44715032

N/A = Not Applicable



# Table3. SCI

-GROW Input Parameters forThiamethoxam

. Input Parameter Value Comment Source
MaximumApplication Rate per growing season(lbs a.i./A) 0.300 (dry bulb onion) 0.080 (peanuts) 0.022 (alfalfa) maximum application rate proposed label

Applications per Year 1 label directions proposed label Organic Carbon Partition Coefficient (KOC

# ) (L/kgOC

# ) 48 represents the medianKOC

# value MRID 44703502

Aerobic Soil Metabolism Half

-life (days) 302 represents themean half

-lifevalue MRID44703418

MRID44703419 MRID44703501



# Application methods and rates were obtained from the proposed labels for peanut and alfalfa seeds and from existing labels for leafy vegetables, dry

bulb onions and corn

. Considering the seed treatment, the date of initial application of thiamethoxam was 7 days before the crop emergencedatefrom therespectivecrop scenarios.Inaddition,amongthe 10 possible scenarios available for corn, the Kansas, Mississippi,Nebraska, and Ohio corn scenarios were selected to be representativeofupper bound estimationsin this assessment.

Standard percent cropped areas (PCA) were used for all uses as estimates of the extent of watershed onwhich crops is grown (Effland etal.
, 1999). The default agricultural PCA of0.87

was used for the proposed uses because they are not confined to specific regions ofthe U.S

. Actual fractions ofcropped areas could be less in some areas ofthe country

. The model input andout put data for these estimates are attachedinAppendixAand B

.

# Page 8 of25

REFERENCES

Effland, W. R., N. C. Thurman, I. Kennedy. 1999. Proposed Methods for Determining Watershed

-derived Percent Crop Areas and Considerations for Applying Crop Area Adjustments to Surface Water Screening Models. Presentation to the FIFRA Science Advisory Panel, May

27, 1999. Online at: http://www.epa.gov/scipoly /sap/1999/index.htm

Jones, R. D., S. Abel, W. R. Effland, R. Matzner, R. Parker. 1998. An Index Reservoir for Use in Assessing Drinking Water Exposure. Proposed Methods for Basin

-scale Estimation of Pesticide Concentrations in Flowing Water and Reservoirs for Tolerance Reassessment. Presentation to FIFRA Science Advisory Panel, June 29

-30, 1998. Online at: http://www.epa.gov/scipoly /sap/1998/index.htm

USEPA. 2005

.PRZM

-3, A Model for Predicting Pesticide and Nitrogen Fate in the Crop Root and Unsaturated Soil Zones: Users Manual for Release 3.0. May 2005

.

USEPA. 2006. Termination of Sampling Request for the Michigan and Georgia Small

-Scale Prospective Groundwater Monitoring Studies for Thiamethoxam. D325449. June 12, 2006.

USEPA. 2007.Revised Tier II Drinking Water Assessment for Thiamethoxam. U.S. Environmental Protection Agency, Office of Prevention, Pesticides and Toxic Substances. DP DP329467. January 10, 2007.

USEPA. 2009. Guidance for Selecting Input Parameters in Modeling theEnvironmental Fate and Transport of Pesticides, Version 2.1. U.S. Environmental Protection Agency, Office of Prevention, Pesticides and Toxic Substances, Office of Pesticide Programs, Environmental Fate andEffects Division, October 22, 2009

.

USEPA. 2010. Water Models. U.S. Environmental Protection Agency, Pesticides: Science and Policy

.Online at:http://www.epa.gov/oppefed1/models/water/

# Page9 of25

Appendix A.PRZM/EXAMS Output Files

# Page 10 of25 stored as ncpeanutdw0.080.out Chemical: Thiamethoxam PRZM environment: NCpeanutSTD.txt modified Tueday, 29 May 2007 at 13:58:46 EXAMS environment: ir298.exv modified Tueday, 26 August 2008 at 06:14:07 Metfile: w13722.dvf modified Tueday, 26 August 2008 at 06:14:27 Water segment concentrations (ppb)

Year Peak 96 hr 21 Day 60 Day 90 Day Yearly 1961 1.77 1.70 1.43 0.93 0.69 0.18 1962 0.11 0.11 0.10 0.07 0.05 0.02 1963 0.85 0.81 0.68 0.43 0.31 0.08 1964 0.06 0.06 0.04 0.04 0.03 0.01 1965 0.30 0.28 0.25 0.19 0.15 0.04 1966 0.19 0.18 0.15 0.09 0.07 0.02 1967 0.89 0.86 0.73 0.48 0.36 0.10 1968 0.12 0.11 0.10 0.07 0.05 0.01 1969 0.34 0.33 0.29 0.19 0.14 0.04 1970 0.09 0.09 0.07 0.05 0.04 0.01 1971 1.87 1.80 1.51 0.98 0.73 0.19 1972 1.47 1.41 1.18 0.78 0.58 0.16 1973 0.16 0.15 0.13 0.08 0.06 0.02 1974 1.40 1.33 1.11 0.74 0.55 0.15 1975 0.11 0.10 0.09 0.06 0.05 0.01 1976 1.31 1.27 1.05 0.66 0.49 0.13 1977 0.31 0.30 0.24 0.15 0.11 0.03 1978 0.46 0.43 0.36 0.23 0.17 0.04 1979 0.46 0.45 0.38 0.25 0.19 0.05 1980 0.63 0.61 0.50 0.31 0.22 0.06 1981 0.56 0.54 0.44 0.30 0.22 0.06 1982 0.03 0.02 0.02 0.01 0.01 0.00 1983 0.55 0.54 0.48 0.32 0.23 0.06 1984 0.58 0.55 0.43 0.26 0.19 0.05 1985 0.19 0.18 0.15 0.10 0.08 0.02 1986 1.14 1.08 0.88 0.52 0.38 0.10 1987 0.10 0.09 0.07 0.06 0.05 0.01 1988 0.47 0.45 0.37 0.23 0.17 0.04 1989 0.22 0.21 0.18 0.15 0.11 0.03 1990 1.85 1.76 1.46 0.94 0.69 0.18

Sorted results Prob. Peak 96 hr 21 Day 60 Day 90 Day Yearly 0.03 1.87 1.80 1.51 0.98 0.73 0.19 0.06 1.85 1.76 1.46 0.94 0.69 0.18 0.10 1.77 1.70 1.43 0.93 0.69 0.18 0.13 1.47 1.41 1.18 0.78 0.58 0.16 0.16 1.40 1.33 1.11 0.74 0.55 0.15 0.19 1.31 1.27 1.05 0.66 0.49 0.13 0.23 1.14 1.08 0.88 0.52 0.38 0.10 0.26 0.89 0.86 0.73 0.48 0.36 0.10 0.29 0.85 0.81 0.68 0.43 0.31 0.08 0.32 0.63 0.61 0.50 0.32 0.23 0.06 0.35 0.58 0.55 0.48 0.31 0.22 0.06 0.39 0.56 0.54 0.44 0.30 0.22 0.06 0.42 0.55 0.54 0.43 0.26 0.19 0.05 0.45 0.47 0.45 0.38 0.25 0.19 0.05 0.48 0.46 0.45 0.37 0.23 0.17 0.04 0.52 0.46 0.43 0.36 0.23 0.17 0.04 0.55 0.34 0.33 0.29 0.19 0.15 0.04 0.58 0.31 0.30 0.25 0.19 0.14 0.04 0.61 0.30 0.28 0.24 0.15 0.11 0.03 0.65 0.22 0.21 0.18 0.15 0.11 0.03 0.68 0.19 0.18 0.15 0.10 0.08 0.02 0.71 0.19 0.18 0.15 0.09 0.07 0.02 0.74 0.16 0.15 0.13 0.08 0.06 0.02 0.77 0.12 0.11 0.10 0.07 0.05 0.02 0.81 0.11 0.11 0.10 0.07 0.05 0.01 0.84 0.11 0.10 0.09 0.06 0.05 0.01 0.87 0.10 0.09 0.07 0.06 0.05 0.01 0.90 0.09 0.09 0.07 0.05 0.04 0.01 0.94 0.06 0.06 0.04 0.04 0.03 0.01 0.97 0.03 0.02 0.02 0.01 0.01 0.00

0.10 1.74 1.67 1.41 0.92 0.68 0.18 Average of yearly averages: 0.06

Inputs generated by pe5.pl - Novemeber 2006

Data used for this run: Output File: ncpeanutdw0.080 Metfile: w13722.dvf PRZM scenario: NCpeanutSTD.txt EXAMS environment file: ir298.exv Chemical Name: Thiamethoxam Description Variable Name Value Units Comments Molecular weight mwt 291.7 g/mol Henry's Law Const. henry 4.65E-15 atm-m^3/mol Vapor Pressure vapr 4.95E-11 torr Solubility sol 4100 mg/L Kd Kd mg/L Koc Koc 70.23 mg/L Photolysis half-life kdp 4.46 days Half-life Aerobic Aquatic Metabolism kbacw 19.92 days Halfife Anaerobic Aquatic Metabolism kbacs 43.98 days Halfife Aerobic Soil Metabolism asm 480.92 days Halfife Hydrolysis: pH 7 0 days Half-life Method: CAM 4 integer See PRZM manual Incorporation Depth: DEPI 2.54 cm Application Rate: TAPP 0.09 kg/ha Application Efficiency: APPEFF 1 fraction Spray Drift DRFT 0 fraction of application rate applied to pond Application Date Date 09-05 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)

# Page 11 of25 stored as Caalfalfa0.022.out Chemical: Thiamethoxam PRZM environment: CAalfalfa_WirrigOP.txt modified Thuday, 14 June 2007 at 11:20:44 EXAMS environment: ir298.exv modified Tueday, 26 August 2008 at 06:14:07 Metfile: w93193.dvf modified Tueday, 26 August 2008 at 06:16:12 Water segment concentrations (ppb)

Year Peak 96 hr 21 Day 60 Day 90 Day Yearly 1961 0.21 0.21 0.19 0.15 0.12 0.04 1962 0.13 0.13 0.12 0.10 0.09 0.03 1963 0.25 0.25 0.23 0.18 0.15 0.05 1964 0.01 0.01 0.01 0.01 0.01 0.00 1965 0.01 0.01 0.01 0.01 0.01 0.00 1966 0.05 0.05 0.04 0.04 0.03 0.01 1967 0.19 0.18 0.17 0.14 0.12 0.03 1968 0.02 0.02 0.02 0.02 0.01 0.00 1969 0.98 0.96 0.89 0.75 0.63 0.19 1970 0.44 0.43 0.39 0.31 0.26 0.08 1971 0.00 0.00 0.00 0.00 0.00 0.00 1972 0.06 0.06 0.05 0.04 0.03 0.01 1973 0.06 0.06 0.06 0.05 0.04 0.01 1974 0.00 0.00 0.00 0.00 0.00 0.00 1975 0.00 0.00 0.00 0.00 0.00 0.00 1976 0.24 0.23 0.21 0.17 0.14 0.04 1977 0.00 0.00 0.00 0.00 0.00 0.00 1978 0.20 0.19 0.17 0.14 0.11 0.03 1979 0.10 0.10 0.09 0.07 0.06 0.02 1980 0.11 0.11 0.10 0.08 0.07 0.02 1981 0.22 0.21 0.19 0.15 0.13 0.04 1982 0.00 0.00 0.00 0.00 0.00 0.00 1983 0.59 0.57 0.54 0.42 0.35 0.10 1984 0.07 0.07 0.06 0.04 0.04 0.01 1985 0.06 0.06 0.06 0.04 0.03 0.01 1986 0.26 0.26 0.23 0.19 0.15 0.04 1987 0.04 0.04 0.03 0.03 0.02 0.01 1988 0.02 0.02 0.02 0.02 0.01 0.00 1989 0.02 0.02 0.02 0.02 0.01 0.00 1990 0.37 0.36 0.33 0.27 0.22 0.06

Sorted results Prob. Peak 96 hr 21 Day 60 Day 90 Day Yearly 0.03 0.98 0.96 0.89 0.75 0.63 0.19 0.06 0.59 0.57 0.54 0.42 0.35 0.10 0.10 0.44 0.43 0.39 0.31 0.26 0.08 0.13 0.37 0.36 0.33 0.27 0.22 0.06 0.16 0.26 0.26 0.23 0.19 0.15 0.05 0.19 0.25 0.25 0.23 0.18 0.15 0.04 0.23 0.24 0.23 0.21 0.17 0.14 0.04 0.26 0.22 0.21 0.19 0.15 0.13 0.04 0.29 0.21 0.21 0.19 0.15 0.12 0.04 0.32 0.20 0.19 0.17 0.14 0.12 0.03 0.35 0.19 0.18 0.17 0.14 0.11 0.03 0.39 0.13 0.13 0.12 0.10 0.09 0.03 0.42 0.11 0.11 0.10 0.08 0.07 0.02 0.45 0.10 0.10 0.09 0.07 0.06 0.02 0.48 0.07 0.07 0.06 0.05 0.04 0.01 0.52 0.06 0.06 0.06 0.04 0.04 0.01 0.55 0.06 0.06 0.06 0.04 0.03 0.01 0.58 0.06 0.06 0.05 0.04 0.03 0.01 0.61 0.05 0.05 0.04 0.04 0.03 0.01 0.65 0.04 0.04 0.03 0.03 0.02 0.01 0.68 0.02 0.02 0.02 0.02 0.01 0.00 0.71 0.02 0.02 0.02 0.02 0.01 0.00 0.74 0.02 0.02 0.02 0.02 0.01 0.00 0.77 0.01 0.01 0.01 0.01 0.01 0.00 0.81 0.01 0.01 0.01 0.01 0.01 0.00 0.84 0.00 0.00 0.00 0.00 0.00 0.00 0.87 0.00 0.00 0.00 0.00 0.00 0.00 0.90 0.00 0.00 0.00 0.00 0.00 0.00 0.94 0.00 0.00 0.00 0.00 0.00 0.00 0.97 0.00 0.00 0.00 0.00 0.00 0.00

0.10 0.43 0.42 0.38 0.31 0.26 0.08 Average of yearly averages: 0.03

Inputs generated by pe5.pl - Novemeber 2006

Data used for this run: Output File: Caalfalfa0.022 Metfile: w93193.dvf PRZM scenario: CAalfalfa_WirrigOP.txt EXAMS environment file: ir298.exv Chemical Name: Thiamethoxam Description Variable Name Value Units Comments Molecular weight mwt 291.7 g/mol Henry's Law Const. henry 4.65E-15 atm-m^3/mol Vapor Pressure vapr 4.95E-11 torr Solubility sol 4100 mg/L Kd Kd mg/L Koc Koc 70.23 mg/L Photolysis half-life kdp 4.46 days Half-life Aerobic Aquatic Metabolism kbacw 19.92 days Halfife Anaerobic Aquatic Metabolism kbacs 43.98 days Halfife Aerobic Soil Metabolism asm 480.92 days Halfife Hydrolysis: pH 7 0 days Half-life Method: CAM 4 integer See PRZM manual Incorporation Depth: DEPI 2.54 cm Application Rate: TAPP 0.025 kg/ha Application Efficiency: APPEFF 1 fraction Spray Drift DRFT 0 fraction of application rate applied to pond Application Date Date 09-01 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)

# Page 12 of25 stored as MNalfalfa0.022.out Chemical: Thiamethoxam PRZM environment: MNalfalfaOP.txt modified Thuday, 14 June 2007 at 11:21:44 EXAMS environment: ir298.exv modified Tueday, 26 August 2008 at 06:14:07 Metfile: w14914.dvf modified Tueday, 26 August 2008 at 06:15:15 Water segment concentrations (ppb)

Year Peak 96 hr 21 Day 60 Day 90 Day Yearly 1961 0.03 0.02 0.02 0.02 0.02 0.01 1962 0.09 0.09 0.07 0.06 0.05 0.02 1963 0.22 0.21 0.18 0.12 0.09 0.03 1964 0.33 0.31 0.25 0.15 0.12 0.04 1965 0.02 0.02 0.02 0.01 0.01 0.01 1966 0.01 0.01 0.01 0.01 0.01 0.00 1967 0.02 0.02 0.02 0.01 0.01 0.00 1968 0.01 0.01 0.01 0.01 0.01 0.00 1969 0.14 0.13 0.11 0.09 0.08 0.03 1970 0.15 0.15 0.13 0.10 0.07 0.03 1971 0.01 0.01 0.01 0.01 0.01 0.01 1972 0.05 0.04 0.04 0.03 0.02 0.01 1973 0.02 0.02 0.02 0.01 0.01 0.00 1974 0.11 0.10 0.09 0.06 0.05 0.02 1975 0.39 0.38 0.34 0.22 0.17 0.05 1976 0.02 0.02 0.02 0.02 0.01 0.01 1977 0.19 0.18 0.15 0.13 0.11 0.04 1978 0.27 0.26 0.22 0.14 0.11 0.03 1979 0.07 0.06 0.05 0.04 0.04 0.01 1980 0.02 0.02 0.02 0.01 0.01 0.01 1981 0.03 0.03 0.02 0.01 0.01 0.01 1982 0.03 0.02 0.02 0.01 0.01 0.00 1983 0.07 0.06 0.05 0.04 0.03 0.01 1984 0.31 0.30 0.25 0.16 0.12 0.04 1985 0.27 0.25 0.22 0.16 0.13 0.04 1986 0.15 0.14 0.12 0.08 0.06 0.02 1987 0.10 0.10 0.08 0.05 0.06 0.02 1988 0.07 0.07 0.06 0.05 0.05 0.02 1989 0.05 0.05 0.04 0.03 0.03 0.02 1990 0.17 0.17 0.14 0.10 0.08 0.03

Sorted results Prob. Peak 96 hr 21 Day 60 Day 90 Day Yearly 0.03 0.39 0.38 0.34 0.22 0.17 0.05 0.06 0.33 0.31 0.25 0.16 0.13 0.04 0.10 0.31 0.30 0.25 0.16 0.12 0.04 0.13 0.27 0.26 0.22 0.15 0.12 0.04 0.16 0.27 0.25 0.22 0.14 0.11 0.04 0.19 0.22 0.21 0.18 0.13 0.11 0.03 0.23 0.19 0.18 0.15 0.12 0.09 0.03 0.26 0.17 0.17 0.14 0.10 0.08 0.03 0.29 0.15 0.15 0.13 0.10 0.08 0.03 0.32 0.15 0.14 0.12 0.09 0.07 0.03 0.35 0.14 0.13 0.11 0.08 0.06 0.02 0.39 0.11 0.10 0.09 0.06 0.06 0.02 0.42 0.10 0.10 0.08 0.06 0.05 0.02 0.45 0.09 0.09 0.07 0.05 0.05 0.02 0.48 0.07 0.07 0.06 0.05 0.05 0.02 0.52 0.07 0.06 0.05 0.04 0.04 0.02 0.55 0.07 0.06 0.05 0.04 0.03 0.01 0.58 0.05 0.05 0.04 0.03 0.03 0.01 0.61 0.05 0.04 0.04 0.03 0.02 0.01 0.65 0.03 0.03 0.02 0.02 0.02 0.01 0.68 0.03 0.02 0.02 0.02 0.01 0.01 0.71 0.03 0.02 0.02 0.01 0.01 0.01 0.74 0.02 0.02 0.02 0.01 0.01 0.01 0.77 0.02 0.02 0.02 0.01 0.01 0.01 0.81 0.02 0.02 0.02 0.01 0.01 0.01 0.84 0.02 0.02 0.02 0.01 0.01 0.00 0.87 0.02 0.02 0.02 0.01 0.01 0.00 0.90 0.01 0.01 0.01 0.01 0.01 0.00 0.94 0.01 0.01 0.01 0.01 0.01 0.00 0.97 0.01 0.01 0.01 0.01 0.01 0.00

0.10 0.31 0.30 0.24 0.16 0.12 0.04 Average of yearly averages: 0.02

Inputs generated by pe5.pl - Novemeber 2006

Data used for this run: Output File: MNalfalfa0.022 Metfile: w14914.dvf PRZM scenario: MNalfalfaOP.txt EXAMS environment file: ir298.exv Chemical Name: Thiamethoxam Description Variable Name Value Units Comments Molecular weight mwt 291.7 g/mol Henry's Law Const. henry 4.65E-15 atm-m^3/mol Vapor Pressure vapr 4.95E-11 torr Solubility sol 4100 mg/L Kd Kd mg/L Koc Koc 70.23 mg/L Photolysis half-life kdp 4.46 days Half-life Aerobic Aquatic Metabolism kbacw 19.92 days Halfife Anaerobic Aquatic Metabolism kbacs 43.98 days Halfife Aerobic Soil Metabolism asm 480.92 days Halfife Hydrolysis: pH 7 0 days Half-life Method: CAM 4 integer See PRZM manual Incorporation Depth: DEPI 2.54 cm Application Rate: TAPP 0.025 kg/ha Application Efficiency: APPEFF 1 fraction Spray Drift DRFT 0 fraction of application rate applied to pond Application Date Date 25-05 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)

# Page 13 of25 stored as NCalfalfa0.022.out Chemical: Thiamethoxam PRZM environment: NCalfalfaOP.txt modified Thuday, 14 June 2007 at 11:21:52 EXAMS environment: ir298.exv modified Tueday, 26 August 2008 at 06:14:07 Metfile: w03812.dvf modified Tueday, 26 August 2008 at 06:14:09 Water segment concentrations (ppb)

Year Peak 96 hr 21 Day 60 Day 90 Day Yearly 1965 1.08 1.06 0.94 0.70 0.55 0.16 1966 0.01 0.01 0.01 0.01 0.01 0.00 1967 0.01 0.01 0.01 0.01 0.01 0.00 1968 0.06 0.06 0.05 0.04 0.03 0.01 1969 0.13 0.12 0.11 0.08 0.06 0.02 1970 0.16 0.16 0.14 0.10 0.08 0.02 1971 0.05 0.05 0.04 0.03 0.03 0.01 1972 0.02 0.02 0.02 0.02 0.01 0.00 1973 0.07 0.07 0.06 0.05 0.04 0.01 1974 0.27 0.26 0.24 0.18 0.14 0.04 1975 0.43 0.42 0.38 0.28 0.22 0.06 1976 0.27 0.26 0.22 0.17 0.13 0.04 1977 0.58 0.56 0.50 0.36 0.29 0.08 1978 0.63 0.61 0.54 0.40 0.32 0.09 1979 0.41 0.39 0.35 0.26 0.20 0.06 1980 0.64 0.63 0.56 0.41 0.32 0.09 1981 0.42 0.41 0.35 0.25 0.20 0.06 1982 0.01 0.01 0.01 0.01 0.00 0.00 1983 0.38 0.37 0.34 0.27 0.22 0.06 1984 0.58 0.56 0.52 0.40 0.32 0.09 1985 0.09 0.09 0.07 0.06 0.05 0.01 1986 0.02 0.02 0.02 0.01 0.01 0.00 1987 0.08 0.08 0.07 0.05 0.04 0.01 1988 0.07 0.07 0.06 0.05 0.04 0.01 1989 0.02 0.02 0.02 0.01 0.01 0.00 1990 0.01 0.01 0.01 0.00 0.00 0.00

Sorted results Prob. Peak 96 hr 21 Day 60 Day 90 Day Yearly 0.04 1.08 1.06 0.94 0.70 0.55 0.16 0.07 0.64 0.63 0.56 0.41 0.32 0.09 0.11 0.63 0.61 0.54 0.40 0.32 0.09 0.15 0.58 0.56 0.52 0.40 0.32 0.09 0.19 0.58 0.56 0.50 0.36 0.29 0.08 0.22 0.43 0.42 0.38 0.28 0.22 0.06 0.26 0.42 0.41 0.35 0.27 0.22 0.06 0.30 0.41 0.39 0.35 0.26 0.20 0.06 0.33 0.38 0.37 0.34 0.25 0.20 0.06 0.37 0.27 0.26 0.24 0.18 0.14 0.04 0.41 0.27 0.26 0.22 0.17 0.13 0.04 0.44 0.16 0.16 0.14 0.10 0.08 0.02 0.48 0.13 0.12 0.11 0.08 0.06 0.02 0.52 0.09 0.09 0.07 0.06 0.05 0.01 0.56 0.08 0.08 0.07 0.05 0.04 0.01 0.59 0.07 0.07 0.06 0.05 0.04 0.01 0.63 0.07 0.07 0.06 0.05 0.04 0.01 0.67 0.06 0.06 0.05 0.04 0.03 0.01 0.70 0.05 0.05 0.04 0.03 0.03 0.01 0.74 0.02 0.02 0.02 0.02 0.01 0.00 0.78 0.02 0.02 0.02 0.01 0.01 0.00 0.81 0.02 0.02 0.02 0.01 0.01 0.00 0.85 0.01 0.01 0.01 0.01 0.01 0.00 0.89 0.01 0.01 0.01 0.01 0.01 0.00 0.93 0.01 0.01 0.01 0.01 0.00 0.00 0.96 0.01 0.01 0.01 0.00 0.00 0.00

0.10 0.63 0.62 0.55 0.41 0.32 0.09 Average of yearly averages: 0.04

Inputs generated by pe5.pl - Novemeber 2006

Data used for this run: Output File: NCalfalfa0.022 Metfile: w03812.dvf PRZM scenario: NCalfalfaOP.txt EXAMS environment file: ir298.exv Chemical Name: Thiamethoxam Description Variable Name Value Units Comments Molecular weight mwt 291.7 g/mol Henry's Law Const. henry 4.65E-15 atm-m^3/mol Vapor Pressure vapr 4.95E-11 torr Solubility sol 4100 mg/L Kd Kd mg/L Koc Koc 70.23 mg/L Photolysis half-life kdp 4.46 days Half-life Aerobic Aquatic Metabolism kbacw 19.92 days Halfife Anaerobic Aquatic Metabolism kbacs 43.98 days Halfife Aerobic Soil Metabolism asm 480.92 days Halfife Hydrolysis: pH 7 0 days Half-life Method: CAM 4 integer See PRZM manual Incorporation Depth: DEPI 2.54 cm Application Rate: TAPP 0.025 kg/ha Application Efficiency: APPEFF 1 fraction Spray Drift DRFT 0 fraction of application rate applied to pond Application Date Date 25-03 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)

# Page 14 of25 stored as PAalfalfa0.022.out Chemical: Thiamethoxam PRZM environment: PAalfalfaOP.txt modified Thuday, 14 June 2007 at 11:23:40 EXAMS environment: ir298.exv modified Tueday, 26 August 2008 at 06:14:07 Metfile: w14751.dvf modified Tueday, 26 August 2008 at 06:14:59 Water segment concentrations (ppb)

Year Peak 96 hr 21 Day 60 Day 90 Day Yearly 1961 0.02 0.02 0.02 0.01 0.01 0.00 1962 0.09 0.09 0.08 0.07 0.06 0.02 1963 0.05 0.05 0.04 0.03 0.03 0.01 1964 0.17 0.16 0.15 0.12 0.10 0.03 1965 0.02 0.02 0.01 0.01 0.01 0.00 1966 0.15 0.15 0.13 0.10 0.08 0.02 1967 0.08 0.08 0.08 0.06 0.05 0.01 1968 0.21 0.20 0.19 0.16 0.13 0.04 1969 0.44 0.43 0.39 0.30 0.23 0.06 1970 0.05 0.04 0.04 0.03 0.03 0.01 1971 0.22 0.21 0.20 0.15 0.13 0.04 1972 0.12 0.12 0.11 0.09 0.08 0.02 1973 0.06 0.06 0.05 0.04 0.03 0.01 1974 0.14 0.14 0.12 0.09 0.08 0.02 1975 0.09 0.09 0.08 0.07 0.05 0.02 1976 0.02 0.02 0.02 0.02 0.01 0.00 1977 0.74 0.72 0.69 0.55 0.45 0.13 1978 0.27 0.27 0.25 0.20 0.16 0.05 1979 0.04 0.04 0.04 0.03 0.02 0.01 1980 0.25 0.25 0.23 0.18 0.14 0.04 1981 0.04 0.04 0.03 0.02 0.02 0.01 1982 0.18 0.17 0.16 0.15 0.12 0.04 1983 0.23 0.22 0.21 0.17 0.14 0.04 1984 0.23 0.22 0.20 0.16 0.13 0.04 1985 0.04 0.04 0.03 0.03 0.02 0.01 1986 0.47 0.46 0.42 0.33 0.27 0.08 1987 0.03 0.03 0.03 0.02 0.02 0.00 1988 0.11 0.11 0.10 0.07 0.06 0.02 1989 0.08 0.08 0.07 0.06 0.05 0.01 1990 0.03 0.03 0.02 0.02 0.02 0.00

Sorted results Prob. Peak 96 hr 21 Day 60 Day 90 Day Yearly 0.03 0.74 0.72 0.69 0.55 0.45 0.13 0.06 0.47 0.46 0.42 0.33 0.27 0.08 0.10 0.44 0.43 0.39 0.30 0.23 0.06 0.13 0.27 0.27 0.25 0.20 0.16 0.05 0.16 0.25 0.25 0.23 0.18 0.14 0.04 0.19 0.23 0.22 0.21 0.17 0.14 0.04 0.23 0.23 0.22 0.20 0.16 0.13 0.04 0.26 0.22 0.21 0.20 0.16 0.13 0.04 0.29 0.21 0.20 0.19 0.15 0.13 0.04 0.32 0.18 0.17 0.16 0.15 0.12 0.04 0.35 0.17 0.16 0.15 0.12 0.10 0.03 0.39 0.15 0.15 0.13 0.10 0.08 0.02 0.42 0.14 0.14 0.12 0.09 0.08 0.02 0.45 0.12 0.12 0.11 0.09 0.08 0.02 0.48 0.11 0.11 0.10 0.07 0.06 0.02 0.52 0.09 0.09 0.08 0.07 0.06 0.02 0.55 0.09 0.09 0.08 0.07 0.05 0.02 0.58 0.08 0.08 0.08 0.06 0.05 0.01 0.61 0.08 0.08 0.07 0.06 0.05 0.01 0.65 0.06 0.06 0.05 0.04 0.03 0.01 0.68 0.05 0.05 0.04 0.03 0.03 0.01 0.71 0.05 0.04 0.04 0.03 0.03 0.01 0.74 0.04 0.04 0.04 0.03 0.02 0.01 0.77 0.04 0.04 0.03 0.03 0.02 0.01 0.81 0.04 0.04 0.03 0.02 0.02 0.01 0.84 0.03 0.03 0.03 0.02 0.02 0.00 0.87 0.03 0.03 0.02 0.02 0.02 0.00 0.90 0.02 0.02 0.02 0.02 0.01 0.00 0.94 0.02 0.02 0.02 0.01 0.01 0.00 0.97 0.02 0.02 0.01 0.01 0.01 0.00

0.10 0.42 0.42 0.38 0.29 0.23 0.06 Average of yearly averages: 0.03

Inputs generated by pe5.pl - Novemeber 2006

Data used for this run: Output File: PAalfalfa0.022 Metfile: w14751.dvf PRZM scenario: PAalfalfaOP.txt EXAMS environment file: ir298.exv Chemical Name: Thiamethoxam Description Variable Name Value Units Comments Molecular weight mwt 291.7 g/mol Henry's Law Const. henry 4.65E-15 atm-m^3/mol Vapor Pressure vapr 4.95E-11 torr Solubility sol 4100 mg/L Kd Kd mg/L Koc Koc 70.23 mg/L Photolysis half-life kdp 4.46 days Half-life Aerobic Aquatic Metabolism kbacw 19.92 days Halfife Anaerobic Aquatic Metabolism kbacs 43.98 days Halfife Aerobic Soil Metabolism asm 480.92 days Halfife Hydrolysis: pH 7 0 days Half-life Method: CAM 4 integer See PRZM manual Incorporation Depth: DEPI 2.54 cm Application Rate: TAPP 0.025 kg/ha Application Efficiency: APPEFF 1 fraction Spray Drift DRFT 0 fraction of application rate applied to pond Application Date Date 09-03 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)

# Page 15 of25 stored as TXalfalfa0.022.out Chemical: Thiamethoxam PRZM environment: TXalfalfaOP.txt modified Thuday, 14 June 2007 at 11:23:54 EXAMS environment: ir298.exv modified Tueday, 26 August 2008 at 06:14:07 Metfile: w13958.dvf modified Tueday, 26 August 2008 at 06:14:43 Water segment concentrations (ppb)

Year Peak 96 hr 21 Day 60 Day 90 Day Yearly 1961 1.00 0.93 0.71 0.44 0.35 0.09 1962 4.09 3.69 2.62 1.51 1.11 0.31 1963 0.21 0.19 0.14 0.10 0.09 0.04 1964 0.66 0.61 0.50 0.34 0.27 0.07 1965 1.02 0.94 0.73 0.49 0.38 0.11 1966 0.26 0.24 0.19 0.12 0.09 0.04 1967 0.31 0.30 0.25 0.17 0.13 0.04 1968 0.45 0.43 0.33 0.21 0.16 0.05 1969 1.83 1.71 1.25 0.72 0.54 0.15 1970 0.30 0.28 0.21 0.13 0.10 0.04 1971 0.06 0.06 0.05 0.03 0.02 0.01 1972 0.05 0.04 0.03 0.03 0.03 0.01 1973 0.94 0.88 0.71 0.46 0.36 0.09 1974 0.76 0.72 0.58 0.37 0.28 0.09 1975 0.70 0.65 0.49 0.31 0.23 0.07 1976 0.35 0.32 0.24 0.16 0.13 0.04 1977 0.49 0.45 0.36 0.22 0.17 0.05 1978 0.16 0.15 0.14 0.09 0.07 0.03 1979 0.16 0.15 0.12 0.07 0.06 0.02 1980 0.40 0.37 0.28 0.18 0.14 0.04 1981 0.39 0.37 0.27 0.17 0.13 0.04 1982 0.06 0.05 0.04 0.03 0.02 0.01 1983 0.17 0.16 0.12 0.08 0.06 0.02 1984 0.17 0.16 0.14 0.10 0.08 0.03 1985 0.08 0.08 0.06 0.04 0.03 0.01 1986 0.54 0.50 0.37 0.22 0.17 0.05 1987 0.76 0.70 0.53 0.33 0.25 0.07 1988 0.21 0.20 0.16 0.10 0.08 0.03 1989 0.10 0.10 0.08 0.07 0.06 0.02 1990 0.07 0.07 0.05 0.04 0.04 0.02

Sorted results Prob. Peak 96 hr 21 Day 60 Day 90 Day Yearly 0.03 4.09 3.69 2.62 1.51 1.11 0.31 0.06 1.83 1.71 1.25 0.72 0.54 0.15 0.10 1.02 0.94 0.73 0.49 0.38 0.11 0.13 1.00 0.93 0.71 0.46 0.36 0.09 0.16 0.94 0.88 0.71 0.44 0.35 0.09 0.19 0.76 0.72 0.58 0.37 0.28 0.09 0.23 0.76 0.70 0.53 0.34 0.27 0.07 0.26 0.70 0.65 0.50 0.33 0.25 0.07 0.29 0.66 0.61 0.49 0.31 0.23 0.07 0.32 0.54 0.50 0.37 0.22 0.17 0.05 0.35 0.49 0.45 0.36 0.22 0.17 0.05 0.39 0.45 0.43 0.33 0.21 0.16 0.05 0.42 0.40 0.37 0.28 0.18 0.14 0.04 0.45 0.39 0.37 0.27 0.17 0.13 0.04 0.48 0.35 0.32 0.25 0.17 0.13 0.04 0.52 0.31 0.30 0.24 0.16 0.13 0.04 0.55 0.30 0.28 0.21 0.13 0.10 0.04 0.58 0.26 0.24 0.19 0.12 0.09 0.04 0.61 0.21 0.20 0.16 0.10 0.09 0.04 0.65 0.21 0.19 0.14 0.10 0.08 0.03 0.68 0.17 0.16 0.14 0.10 0.08 0.03 0.71 0.17 0.16 0.14 0.09 0.07 0.03 0.74 0.16 0.15 0.12 0.08 0.06 0.02 0.77 0.16 0.15 0.12 0.07 0.06 0.02 0.81 0.10 0.10 0.08 0.07 0.06 0.02 0.84 0.08 0.08 0.06 0.04 0.04 0.02 0.87 0.07 0.07 0.05 0.04 0.03 0.01 0.90 0.06 0.06 0.05 0.03 0.03 0.01 0.94 0.06 0.05 0.04 0.03 0.02 0.01 0.97 0.05 0.04 0.03 0.03 0.02 0.01

0.10 1.02 0.94 0.72 0.48 0.38 0.11 Average of yearly averages: 0.06

Inputs generated by pe5.pl - Novemeber 2006

Data used for this run: Output File: TXalfalfa0.022 Metfile: w13958.dvf PRZM scenario: TXalfalfaOP.txt EXAMS environment file: ir298.exv Chemical Name: Thiamethoxam Description Variable Name Value Units Comments Molecular weight mwt 291.7 g/mol Henry's Law Const. henry 4.65E-15 atm-m^3/mol Vapor Pressure vapr 4.95E-11 torr Solubility sol 4100 mg/L Kd Kd mg/L Koc Koc 70.23 mg/L Photolysis half-life kdp 4.46 days Half-life Aerobic Aquatic Metabolism kbacw 19.92 days Halfife Anaerobic Aquatic Metabolism kbacs 43.98 days Halfife Aerobic Soil Metabolism asm 480.92 days Halfife Hydrolysis: pH 7 0 days Half-life Method: CAM 4 integer See PRZM manual Incorporation Depth: DEPI 2.54 cm Application Rate: TAPP 0.025 kg/ha Application Efficiency: APPEFF 1 fraction Spray Drift DRFT 0 fraction of application rate applied to pond Application Date Date 25-08 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)

# Page 16 of25 stored as ILalfalfa0.022.out Chemical: Thiamethoxam PRZM environment: ILalfalfaNMC.txt modified Thuday, 14 June 2007 at 11:16:12 EXAMS environment: ir298.exv modified Tueday, 26 August 2008 at 06:14:07 Metfile: w14842.dvf modified Tueday, 26 August 2008 at 06:15:07 Water segment concentrations (ppb)

Year Peak 96 hr 21 Day 60 Day 90 Day Yearly 1961 0.07 0.06 0.05 0.03 0.02 0.01 1962 0.53 0.51 0.41 0.26 0.20 0.05 1963 0.14 0.14 0.11 0.08 0.07 0.02 1964 0.18 0.17 0.13 0.08 0.06 0.02 1965 0.13 0.12 0.10 0.07 0.05 0.02 1966 0.05 0.05 0.04 0.03 0.03 0.01 1967 0.12 0.12 0.09 0.07 0.05 0.02 1968 0.17 0.16 0.13 0.08 0.07 0.02 1969 0.04 0.04 0.03 0.03 0.02 0.01 1970 0.14 0.13 0.11 0.07 0.05 0.02 1971 0.20 0.19 0.15 0.10 0.07 0.02 1972 0.10 0.09 0.08 0.06 0.04 0.01 1973 0.10 0.09 0.08 0.05 0.04 0.01 1974 0.16 0.15 0.13 0.09 0.07 0.02 1975 0.69 0.66 0.55 0.35 0.26 0.07 1976 0.47 0.45 0.36 0.26 0.20 0.06 1977 0.03 0.03 0.02 0.02 0.01 0.01 1978 0.39 0.38 0.31 0.21 0.15 0.04 1979 0.01 0.01 0.01 0.01 0.01 0.00 1980 1.22 1.15 0.92 0.58 0.42 0.11 1981 0.04 0.04 0.03 0.02 0.02 0.01 1982 0.25 0.24 0.19 0.13 0.10 0.03 1983 0.02 0.02 0.02 0.01 0.01 0.00 1984 0.21 0.20 0.18 0.11 0.09 0.02 1985 0.12 0.11 0.10 0.06 0.05 0.01 1986 0.30 0.29 0.25 0.15 0.11 0.03 1987 0.31 0.29 0.22 0.13 0.10 0.03 1988 0.01 0.01 0.01 0.01 0.00 0.00 1989 0.01 0.01 0.01 0.01 0.01 0.00 1990 1.06 1.02 0.84 0.54 0.41 0.11

Sorted results Prob. Peak 96 hr 21 Day 60 Day 90 Day Yearly 0.03 1.22 1.15 0.92 0.58 0.42 0.11 0.06 1.06 1.02 0.84 0.54 0.41 0.11 0.10 0.69 0.66 0.55 0.35 0.26 0.07 0.13 0.53 0.51 0.41 0.26 0.20 0.06 0.16 0.47 0.45 0.36 0.26 0.20 0.05 0.19 0.39 0.38 0.31 0.21 0.15 0.04 0.23 0.31 0.29 0.25 0.15 0.11 0.03 0.26 0.30 0.29 0.22 0.13 0.10 0.03 0.29 0.25 0.24 0.19 0.13 0.10 0.03 0.32 0.21 0.20 0.18 0.11 0.09 0.02 0.35 0.20 0.19 0.15 0.10 0.07 0.02 0.39 0.18 0.17 0.13 0.09 0.07 0.02 0.42 0.17 0.16 0.13 0.08 0.07 0.02 0.45 0.16 0.15 0.13 0.08 0.07 0.02 0.48 0.14 0.14 0.11 0.08 0.06 0.02 0.52 0.14 0.13 0.11 0.07 0.05 0.02 0.55 0.13 0.12 0.10 0.07 0.05 0.02 0.58 0.12 0.12 0.10 0.07 0.05 0.02 0.61 0.12 0.11 0.09 0.06 0.05 0.01 0.65 0.10 0.09 0.08 0.06 0.04 0.01 0.68 0.10 0.09 0.08 0.05 0.04 0.01 0.71 0.07 0.06 0.05 0.03 0.03 0.01 0.74 0.05 0.05 0.04 0.03 0.02 0.01 0.77 0.04 0.04 0.03 0.03 0.02 0.01 0.81 0.04 0.04 0.03 0.02 0.02 0.01 0.84 0.03 0.03 0.02 0.02 0.01 0.01 0.87 0.02 0.02 0.02 0.01 0.01 0.00 0.90 0.01 0.01 0.01 0.01 0.01 0.00 0.94 0.01 0.01 0.01 0.01 0.01 0.00 0.97 0.01 0.01 0.01 0.01 0.00 0.00

0.10 0.67 0.64 0.54 0.34 0.26 0.07 Average of yearly averages: 0.03

Inputs generated by pe5.pl - Novemeber 2006

Data used for this run: Output File: ILalfalfa0.022 Metfile: w14842.dvf PRZM scenario: ILalfalfaNMC.txt EXAMS environment file: ir298.exv Chemical Name: Thiamethoxam Description Variable Name Value Units Comments Molecular weight mwt 291.7 g/mol Henry's Law Const. henry 4.65E-15 atm-m^3/mol Vapor Pressure vapr 4.95E-11 torr Solubility sol 4100 mg/L Kd Kd mg/L Koc Koc 70.23 mg/L Photolysis half-life kdp 4.46 days Half-life Aerobic Aquatic Metabolism kbacw 19.92 days Halfife Anaerobic Aquatic Metabolism kbacs 43.98 days Halfife Aerobic Soil Metabolism asm 480.92 days Halfife Hydrolysis: pH 7 0 days Half-life Method: CAM 4 integer See PRZM manual Incorporation Depth: DEPI 2.54 cm Application Rate: TAPP 0.025 kg/ha Application Efficiency: APPEFF 1 fraction Spray Drift DRFT 0 fraction of application rate applied to pond Application Date Date 25-05 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)

# Page 17 of25 stored as caletucedw0.266.out Chemical: Thiamethoxam PRZM environment: CAlettuceSTD.txt modified Tueday, 21 February 2006 at 15:38:22 EXAMS environment: ir298.exv modified Tueday, 26 August 2008 at 06:14:07 Metfile: w23273.dvf modified Tueday, 26 August 2008 at 06:15:39 Water segment concentrations (ppb)

Year Peak 96 hr 21 Day 60 Day 90 Day Yearly 1961 2.45 2.37 2.22 1.37 0.91 0.23 1962 45.10 43.90 38.78 29.48 24.04 7.45 1963 23.41 22.70 19.61 14.56 11.89 3.62 1964 2.36 2.28 2.11 1.60 1.31 0.41 1965 0.17 0.16 0.15 0.11 0.10 0.04 1966 1.55 1.50 1.29 0.93 0.62 0.15 1967 0.89 0.87 0.78 0.59 0.49 0.21 1968 0.72 0.69 0.62 0.57 0.48 0.15 1969 3.26 3.15 2.87 2.18 1.78 0.54 1970 6.62 6.40 5.59 4.04 3.24 0.97 1971 0.59 0.57 0.49 0.35 0.29 0.11 1972 1.56 1.50 1.26 1.19 0.96 0.24 1973 27.70 26.91 23.39 17.46 14.18 4.30 1974 14.83 14.34 12.53 9.24 7.47 2.25 1975 2.07 2.00 1.73 1.58 1.35 0.43 1976 16.68 16.08 14.01 10.41 8.46 2.54 1977 5.79 5.59 4.83 3.59 3.04 0.93 1978 43.89 43.08 37.90 27.60 22.21 6.61 1979 5.24 5.08 4.57 3.52 2.86 0.87 1980 21.37 20.78 18.24 13.56 10.97 3.29 1981 4.80 4.67 4.19 3.20 2.77 0.87 1982 6.06 5.84 5.03 3.75 3.04 0.92 1983 12.17 11.73 10.77 8.40 6.85 2.03 1984 0.16 0.15 0.13 0.10 0.08 0.03 1985 0.35 0.34 0.30 0.22 0.17 0.06 1986 23.97 23.09 20.15 14.85 12.00 3.60 1987 3.02 2.92 2.54 2.03 1.73 0.54 1988 4.09 3.94 3.37 2.47 2.01 0.60 1989 0.13 0.12 0.10 0.07 0.07 0.03 1990 1.63 1.58 1.38 1.02 0.82 0.26

Sorted results Prob. Peak 96 hr 21 Day 60 Day 90 Day Yearly 0.03 45.10 43.90 38.78 29.48 24.04 7.45 0.06 43.89 43.08 37.90 27.60 22.21 6.61 0.10 27.70 26.91 23.39 17.46 14.18 4.30 0.13 23.97 23.09 20.15 14.85 12.00 3.62 0.16 23.41 22.70 19.61 14.56 11.89 3.60 0.19 21.37 20.78 18.24 13.56 10.97 3.29 0.23 16.68 16.08 14.01 10.41 8.46 2.54 0.26 14.83 14.34 12.53 9.24 7.47 2.25 0.29 12.17 11.73 10.77 8.40 6.85 2.03 0.32 6.62 6.40 5.59 4.04 3.24 0.97 0.35 6.06 5.84 5.03 3.75 3.04 0.93 0.39 5.79 5.59 4.83 3.59 3.04 0.92 0.42 5.24 5.08 4.57 3.52 2.86 0.87 0.45 4.80 4.67 4.19 3.20 2.77 0.87 0.48 4.09 3.94 3.37 2.47 2.01 0.60 0.52 3.26 3.15 2.87 2.18 1.78 0.54 0.55 3.02 2.92 2.54 2.03 1.73 0.54 0.58 2.45 2.37 2.22 1.60 1.35 0.43 0.61 2.36 2.28 2.11 1.58 1.31 0.41 0.65 2.07 2.00 1.73 1.37 0.96 0.26 0.68 1.63 1.58 1.38 1.19 0.91 0.24 0.71 1.56 1.50 1.29 1.02 0.82 0.23 0.74 1.55 1.50 1.26 0.93 0.62 0.21 0.77 0.89 0.87 0.78 0.59 0.49 0.15 0.81 0.72 0.69 0.62 0.57 0.48 0.15 0.84 0.59 0.57 0.49 0.35 0.29 0.11 0.87 0.35 0.34 0.30 0.22 0.17 0.06 0.90 0.17 0.16 0.15 0.11 0.10 0.04 0.94 0.16 0.15 0.13 0.10 0.08 0.03 0.97 0.13 0.12 0.10 0.07 0.07 0.03

0.10 27.33 26.53 23.07 17.20 13.96 4.23 Average of yearly averages: 1.48

Inputs generated by pe5.pl - Novemeber 2006

Data used for this run: Output File: caletucedw0.266 Metfile: w23273.dvf PRZM scenario: CAlettuceSTD.txt EXAMS environment file: ir298.exv Chemical Name: Thiamethoxam Description Variable Name Value Units Comments Molecular weight mwt 291.7 g/mol Henry's Law Const. henry 4.65E-15 atm-m^3/mol Vapor Pressure vapr 4.95E-11 torr Solubility sol 4100 mg/L Kd Kd mg/L Koc Koc 70.23 mg/L Photolysis half-life kdp 4.46 days Half-life Aerobic Aquatic Metabolism kbacw 19.92 days Halfife Anaerobic Aquatic Metabolism kbacs 43.98 days Halfife Aerobic Soil Metabolism asm 480.92 days Halfife Hydrolysis: pH 7 0 days Half-life Method: CAM 4 integer See PRZM manual Incorporation Depth: DEPI 2.54 cm Application Rate: TAPP 0.299 kg/ha Application Efficiency: APPEFF 1 fraction Spray Drift DRFT 0 fraction of application rate applied to pond Application Date Date 09-02 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)

# Page 18 of25 stored as caoniondw0.3.out Chemical: Thiamethoxam PRZM environment: CAonion_WirrigSTD.txt modified Tueday, 29 May 2007 at 13:43:34 EXAMS environment: ir298.exv modified Tueday, 26 August 2008 at 06:14:07 Metfile: w23155.dvf modified Tueday, 26 August 2008 at 06:15:34 Water segment concentrations (ppb)

Year Peak 96 hr 21 Day 60 Day 90 Day Yearly 1961 5E-14 5E-14 4E-14 3E-14 2E-14 5E-15 1962 1E-01 1E-01 1E-01 8E-02 7E-02 2E-02 1963 5E-01 5E-01 4E-01 3E-01 3E-01 7E-02 1964 2E-04 2E-04 2E-04 2E-04 2E-04 5E-05 1965 1E-05 9E-06 8E-06 6E-06 5E-06 1E-06 1966 5E-01 5E-01 5E-01 4E-01 3E-01 9E-02 1967 1E+00 1E+00 1E+00 9E-01 7E-01 2E-01 1968 3E-04 3E-04 2E-04 2E-04 2E-04 6E-05 1969 8E-01 7E-01 7E-01 5E-01 4E-01 1E-01 1970 5E-02 5E-02 4E-02 3E-02 2E-02 6E-03 1971 4E-05 4E-05 3E-05 2E-05 2E-05 5E-06 1972 6E-08 6E-08 5E-08 3E-08 2E-08 8E-09 1973 2E+00 2E+00 2E+00 1E+00 1E+00 3E-01 1974 1E-01 1E-01 1E-01 8E-02 6E-02 2E-02 1975 2E-01 2E-01 1E-01 1E-01 8E-02 2E-02 1976 2E-01 2E-01 2E-01 2E-01 1E-01 3E-02 1977 4E-05 4E-05 4E-05 3E-05 3E-05 8E-06 1978 2E-01 2E-01 2E-01 1E-01 1E-01 3E-02 1979 3E+00 3E+00 3E+00 2E+00 2E+00 5E-01 1980 2E+00 2E+00 2E+00 1E+00 1E+00 3E-01 1981 4E-01 4E-01 4E-01 3E-01 2E-01 6E-02 1982 2E-02 2E-02 1E-02 1E-02 8E-03 2E-03 1983 2E+00 2E+00 1E+00 1E+00 9E-01 3E-01 1984 4E-04 4E-04 4E-04 3E-04 3E-04 8E-05 1985 2E-05 2E-05 2E-05 2E-05 1E-05 3E-06 1986 1E-03 9E-04 8E-04 6E-04 5E-04 1E-04 1987 3E-07 3E-07 3E-07 2E-07 2E-07 6E-08 1988 2E-06 2E-06 2E-06 1E-06 1E-06 3E-07 1989 4E-01 4E-01 4E-01 3E-01 2E-01 6E-02 1990 9E-04 9E-04 8E-04 6E-04 5E-04 1E-04

Sorted results Prob. Peak 96 hr 21 Day 60 Day 90 Day Yearly 0.03 3.01 2.92 2.59 2.05 1.71 0.49 0.06 2.02 1.96 1.74 1.34 1.11 0.32 0.10 1.81 1.76 1.57 1.18 0.99 0.29 0.13 1.71 1.67 1.47 1.14 0.94 0.27 0.16 1.32 1.29 1.16 0.90 0.75 0.22 0.19 0.75 0.73 0.68 0.53 0.44 0.13 0.23 0.54 0.53 0.49 0.39 0.31 0.09 0.26 0.53 0.51 0.44 0.33 0.26 0.07 0.29 0.44 0.43 0.38 0.28 0.22 0.06 0.32 0.43 0.42 0.37 0.27 0.22 0.06 0.35 0.25 0.24 0.21 0.16 0.13 0.03 0.39 0.18 0.18 0.16 0.14 0.12 0.03 0.42 0.16 0.16 0.14 0.10 0.08 0.02 0.45 0.12 0.12 0.11 0.08 0.07 0.02 0.48 0.12 0.12 0.10 0.08 0.06 0.02 0.52 0.05 0.05 0.04 0.03 0.02 0.01 0.55 0.02 0.02 0.01 0.01 0.01 0.00 0.58 0.00 0.00 0.00 0.00 0.00 0.00 0.61 0.00 0.00 0.00 0.00 0.00 0.00 0.65 0.00 0.00 0.00 0.00 0.00 0.00 0.68 0.00 0.00 0.00 0.00 0.00 0.00 0.71 0.00 0.00 0.00 0.00 0.00 0.00 0.74 0.00 0.00 0.00 0.00 0.00 0.00 0.77 0.00 0.00 0.00 0.00 0.00 0.00 0.81 0.00 0.00 0.00 0.00 0.00 0.00 0.84 0.00 0.00 0.00 0.00 0.00 0.00 0.87 0.00 0.00 0.00 0.00 0.00 0.00 0.90 0.00 0.00 0.00 0.00 0.00 0.00 0.94 0.00 0.00 0.00 0.00 0.00 0.00 0.97 0.00 0.00 0.00 0.00 0.00 0.00

0.10 1.80 1.75 1.56 1.17 0.99 0.29 Average of yearly averages: 0.07

Inputs generated by pe5.pl - Novemeber 2006

Data used for this run: Output File: caoniondw0.3 Metfile: w23155.dvf PRZM scenario: CAonion_WirrigSTD.txt EXAMS environment file: ir298.exv Chemical Name: Thiamethoxam Description Variable Name Value Units Comments Molecular weight mwt 291.7 g/mol Henry's Law Const. henry 4.65E-15 atm-m^3/mol Vapor Pressure vapr 4.95E-11 torr Solubility sol 4100 mg/L Kd Kd mg/L Koc Koc 70.23 mg/L Photolysis half-life kdp 4.46 days Half-life Aerobic Aquatic Metabolism kbacw 19.92 days Halfife Anaerobic Aquatic Metabolism kbacs 43.98 days Halfife Aerobic Soil Metabolism asm 480.92 days Halfife Hydrolysis: pH 7 0 days Half-life Method: CAM 4 integer See PRZM manual Incorporation Depth: DEPI 2.54 cm Application Rate: TAPP 0.337 kg/ha Application Efficiency: APPEFF 1 fraction Spray Drift DRFT 0 fraction of application rate applied to pond Application Date Date 09-01 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)

# Page 19 of25 stored as gaoniondw0.3.out Chemical: Thiamethoxam PRZM environment: GAOnion_WirrigSTD.txt modified Tueday, 29 May 2007 at 13:54:42 EXAMS environment: ir298.exv modified Tueday, 26 August 2008 at 06:14:07 Metfile: w03822.dvf modified Tueday, 26 August 2008 at 06:14:10 Water segment concentrations (ppb)

Year Peak 96 hr 21 Day 60 Day 90 Day Yearly 1961 0.02 0.02 0.01 0.01 0.00 0.00 1962 5.93 5.43 4.01 2.37 1.75 0.45 1963 5.66 5.21 3.90 2.31 1.73 0.46 1964 11.43 10.47 7.66 4.71 3.49 0.93 1965 3.12 2.88 2.47 1.53 1.14 0.33 1966 6.06 5.54 3.91 2.23 1.63 0.44 1967 1.65 1.53 1.22 0.76 0.57 0.16 1968 0.83 0.79 0.68 0.45 0.34 0.10 1969 1.26 1.17 0.86 0.53 0.41 0.12 1970 9.18 8.34 6.34 3.64 2.67 0.69 1971 0.91 0.83 0.57 0.40 0.31 0.11 1972 0.09 0.08 0.07 0.05 0.03 0.01 1973 7.91 7.18 5.19 2.95 2.15 0.55 1974 0.20 0.19 0.15 0.09 0.07 0.02 1975 3.67 3.36 2.71 1.69 1.24 0.32 1976 34.56 31.69 22.69 13.30 9.91 2.54 1977 4.03 3.67 2.66 1.53 1.12 0.45 1978 0.28 0.27 0.20 0.12 0.09 0.04 1979 2.02 1.84 1.41 0.85 0.63 0.16 1980 4.94 4.48 3.55 2.10 1.55 0.41 1981 4.35 3.98 2.84 1.70 1.28 0.35 1982 1.64 1.50 1.08 0.73 0.54 0.16 1983 8.11 7.42 5.52 3.15 2.30 0.59 1984 3.14 2.97 2.23 1.27 0.94 0.26 1985 0.73 0.67 0.50 0.29 0.21 0.07 1986 0.85 0.79 0.58 0.34 0.25 0.07 1987 0.55 0.50 0.35 0.22 0.16 0.05 1988 32.56 29.69 21.08 11.95 8.72 2.22 1989 24.85 22.80 16.51 9.55 7.03 1.85 1990 10.99 10.22 7.71 4.64 3.49 0.97

Sorted results Prob. Peak 96 hr 21 Day 60 Day 90 Day Yearly 0.03 34.56 31.69 22.69 13.30 9.91 2.54 0.06 32.56 29.69 21.08 11.95 8.72 2.22 0.10 24.85 22.80 16.51 9.55 7.03 1.85 0.13 11.43 10.47 7.71 4.71 3.49 0.97 0.16 10.99 10.22 7.66 4.64 3.49 0.93 0.19 9.18 8.34 6.34 3.64 2.67 0.69 0.23 8.11 7.42 5.52 3.15 2.30 0.59 0.26 7.91 7.18 5.19 2.95 2.15 0.55 0.29 6.06 5.54 4.01 2.37 1.75 0.46 0.32 5.93 5.43 3.91 2.31 1.73 0.45 0.35 5.66 5.21 3.90 2.23 1.63 0.45 0.39 4.94 4.48 3.55 2.10 1.55 0.44 0.42 4.35 3.98 2.84 1.70 1.28 0.41 0.45 4.03 3.67 2.71 1.69 1.24 0.35 0.48 3.67 3.36 2.66 1.53 1.14 0.33 0.52 3.14 2.97 2.47 1.53 1.12 0.32 0.55 3.12 2.88 2.23 1.27 0.94 0.26 0.58 2.02 1.84 1.41 0.85 0.63 0.16 0.61 1.65 1.53 1.22 0.76 0.57 0.16 0.65 1.64 1.50 1.08 0.73 0.54 0.16 0.68 1.26 1.17 0.86 0.53 0.41 0.12 0.71 0.91 0.83 0.68 0.45 0.34 0.11 0.74 0.85 0.79 0.58 0.40 0.31 0.10 0.77 0.83 0.79 0.57 0.34 0.25 0.07 0.81 0.73 0.67 0.50 0.29 0.21 0.07 0.84 0.55 0.50 0.35 0.22 0.16 0.05 0.87 0.28 0.27 0.20 0.12 0.09 0.04 0.90 0.20 0.19 0.15 0.09 0.07 0.02 0.94 0.09 0.08 0.07 0.05 0.03 0.01 0.97 0.02 0.02 0.01 0.01 0.00 0.00

0.10 23.51 21.57 15.63 9.06 6.67 1.77 Average of yearly averages: 0.50

Inputs generated by pe5.pl - Novemeber 2006

Data used for this run: Output File: gaoniondw0.3 Metfile: w03822.dvf PRZM scenario: GAOnion_WirrigSTD.txt EXAMS environment file: ir298.exv Chemical Name: Thiamethoxam Description Variable Name Value Units Comments Molecular weight mwt 291.7 g/mol Henry's Law Const. henry 4.65E-15 atm-m^3/mol Vapor Pressure vapr 4.95E-11 torr Solubility sol 4100 mg/L Kd Kd mg/L Koc Koc 70.23 mg/L Photolysis half-life kdp 4.46 days Half-life Aerobic Aquatic Metabolism kbacw 19.92 days Halfife Anaerobic Aquatic Metabolism kbacs 43.98 days Halfife Aerobic Soil Metabolism asm 480.92 days Halfife Hydrolysis: pH 7 0 days Half-life Method: CAM 4 integer See PRZM manual Incorporation Depth: DEPI 2.54 cm Application Rate: TAPP 0.337 kg/ha Application Efficiency: APPEFF 1 fraction Spray Drift DRFT 0 fraction of application rate applied to pond Application Date Date 08-09 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)

# Page20 of25 stored as KScorndw0.210.out Chemical: Thiamethoxam PRZM environment: KSCornStd.txt modified Monday, 25 August 2008 at 15:45:08 EXAMS environment: ir298.exv modified Tueday, 26 August 2008 at 06:14:07 Metfile: w13996.dvf modified Tueday, 26 August 2008 at 06:14:51 Water segment concentrations (ppb)

Year Peak 96 hr 21 Day 60 Day 90 Day Yearly 1961 13.22 12.80 11.10 7.72 5.79 1.55 1962 3.30 3.10 2.47 1.53 1.12 0.32 1963 11.25 10.91 9.32 6.09 4.45 1.16 1964 1.34 1.26 1.15 0.78 0.57 0.16 1965 1.98 1.88 1.57 1.01 0.74 0.21 1966 1.51 1.43 1.19 0.74 0.54 0.15 1967 10.58 10.17 8.72 6.24 4.71 1.28 1968 2.75 2.65 2.30 1.68 1.27 0.36 1969 11.63 11.11 9.42 6.60 4.97 1.32 1970 2.12 2.01 1.71 1.14 0.85 0.24 1971 5.48 5.32 4.65 3.00 2.21 0.59 1972 13.53 12.95 10.89 7.26 5.45 1.46 1973 10.79 10.36 8.87 6.27 4.67 1.26 1974 2.74 2.61 2.13 1.44 1.06 0.29 1975 1.31 1.25 1.11 0.71 0.52 0.14 1976 3.46 3.32 3.11 2.23 1.67 0.44 1977 20.77 19.67 16.23 10.52 7.72 2.02 1978 4.03 3.86 3.26 2.62 1.99 0.55 1979 0.37 0.35 0.28 0.19 0.14 0.05 1980 3.33 3.13 2.64 1.54 1.09 0.28 1981 6.36 6.10 5.60 3.80 2.80 0.74 1982 17.53 16.79 15.31 10.65 8.00 2.14 1983 1.83 1.75 1.61 1.05 0.77 0.22 1984 4.59 4.39 3.52 2.17 1.58 0.42 1985 2.95 2.81 2.31 1.69 1.28 0.35 1986 10.23 9.92 8.70 5.65 4.15 1.09 1987 5.79 5.47 4.42 3.00 2.22 0.59 1988 2.14 2.03 1.65 1.17 0.94 0.26 1989 13.66 13.06 11.27 7.60 5.68 1.52 1990 4.67 4.49 3.87 2.58 1.90 0.52

Sorted results Prob. Peak 96 hr 21 Day 60 Day 90 Day Yearly 0.03 20.77 19.67 16.23 10.65 8.00 2.14 0.06 17.53 16.79 15.31 10.52 7.72 2.02 0.10 13.66 13.06 11.27 7.72 5.79 1.55 0.13 13.53 12.95 11.10 7.60 5.68 1.52 0.16 13.22 12.80 10.89 7.26 5.45 1.46 0.19 11.63 11.11 9.42 6.60 4.97 1.32 0.23 11.25 10.91 9.32 6.27 4.71 1.28 0.26 10.79 10.36 8.87 6.24 4.67 1.26 0.29 10.58 10.17 8.72 6.09 4.45 1.16 0.32 10.23 9.92 8.70 5.65 4.15 1.09 0.35 6.36 6.10 5.60 3.80 2.80 0.74 0.39 5.79 5.47 4.65 3.00 2.22 0.59 0.42 5.48 5.32 4.42 3.00 2.21 0.59 0.45 4.67 4.49 3.87 2.62 1.99 0.55 0.48 4.59 4.39 3.52 2.58 1.90 0.52 0.52 4.03 3.86 3.26 2.23 1.67 0.44 0.55 3.46 3.32 3.11 2.17 1.58 0.42 0.58 3.33 3.13 2.64 1.69 1.28 0.36 0.61 3.30 3.10 2.47 1.68 1.27 0.35 0.65 2.95 2.81 2.31 1.54 1.12 0.32 0.68 2.75 2.65 2.30 1.53 1.09 0.29 0.71 2.74 2.61 2.13 1.44 1.06 0.28 0.74 2.14 2.03 1.71 1.17 0.94 0.26 0.77 2.12 2.01 1.65 1.14 0.85 0.24 0.81 1.98 1.88 1.61 1.05 0.77 0.22 0.84 1.83 1.75 1.57 1.01 0.74 0.21 0.87 1.51 1.43 1.19 0.78 0.57 0.16 0.90 1.34 1.26 1.15 0.74 0.54 0.15 0.94 1.31 1.25 1.11 0.71 0.52 0.14 0.97 0.37 0.35 0.28 0.19 0.14 0.05

0.10 13.65 13.05 11.25 7.71 5.78 1.54 Average of yearly averages: 0.72

Inputs generated by pe5.pl - Novemeber 2006

Data used for this run: Output File: KScorndw0.210 Metfile: w13996.dvf PRZM scenario: KSCornStd.txt EXAMS environment file: ir298.exv Chemical Name: Thiamethoxam Description Variable Name Value Units Comments Molecular weight mwt 291.7 g/mol Henry's Law Const. henry 4.65E-15 atm-m^3/mol Vapor Pressure vapr 4.95E-11 torr Solubility sol 4100 mg/L Kd Kd mg/L Koc Koc 70.23 mg/L Photolysis half-life kdp 4.46 days Half-life Aerobic Aquatic Metabolism kbacw 19.92 days Halfife Anaerobic Aquatic Metabolism kbacs 43.98 days Halfife Aerobic Soil Metabolism asm 480.92 days Halfife Hydrolysis: pH 7 0 days Half-life Method: CAM 4 integer See PRZM manual Incorporation Depth: DEPI 2.54 cm Application Rate: TAPP 0.236 kg/ha Application Efficiency: APPEFF 1 fraction Spray Drift DRFT 0 fraction of application rate applied to pond Application Date Date 03-05 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)

# Page21 of25 stored as MScorndw0.210.out Chemical: Thiamethoxam PRZM environment: MScornSTD.txt modified Tueday, 29 May 2007 at 13:57:40 EXAMS environment: ir298.exv modified Tueday, 26 August 2008 at 06:14:07 Metfile: w03940.dvf modified Tueday, 26 August 2008 at 06:14:14 Water segment concentrations (ppb)

Year Peak 96 hr 21 Day 60 Day 90 Day Yearly 1961 2.09 2.01 1.72 1.28 0.98 0.26 1962 19.00 18.37 16.04 10.96 8.12 2.09 1963 1.83 1.74 1.45 0.95 0.71 0.19 1964 19.34 18.38 15.54 10.00 7.34 1.88 1965 0.65 0.61 0.50 0.32 0.24 0.06 1966 2.44 2.34 1.97 1.28 0.94 0.25 1967 4.06 3.85 3.23 2.42 1.87 0.50 1968 14.67 14.10 12.05 8.23 6.14 1.59 1969 4.22 4.03 3.35 2.23 1.64 0.43 1970 1.36 1.29 1.18 0.83 0.62 0.16 1971 10.49 10.05 8.57 5.68 4.18 1.08 1972 0.70 0.66 0.56 0.43 0.34 0.09 1973 8.95 8.66 7.27 5.19 3.88 1.00 1974 18.41 17.62 15.01 9.70 7.19 1.87 1975 3.65 3.50 3.16 2.16 1.60 0.42 1976 1.51 1.43 1.23 0.92 0.69 0.18 1977 20.75 19.75 16.57 10.97 8.04 2.06 1978 2.37 2.26 2.01 1.40 1.03 0.27 1979 22.61 21.85 18.70 13.67 10.40 2.74 1980 15.12 14.65 12.56 8.19 6.02 1.54 1981 1.82 1.72 1.37 1.00 0.79 0.21 1982 6.92 6.61 5.46 3.39 2.47 0.63 1983 39.12 38.06 33.11 22.84 17.22 4.49 1984 2.61 2.50 2.15 1.64 1.25 0.33 1985 3.60 3.44 2.92 2.16 1.62 0.42 1986 0.55 0.52 0.44 0.33 0.26 0.07 1987 0.86 0.81 0.68 0.42 0.31 0.08 1988 3.42 3.27 2.66 1.68 1.24 0.32 1989 4.24 4.12 3.50 2.68 2.04 0.54 1990 1.57 1.50 1.26 0.84 0.64 0.17

Sorted results Prob. Peak 96 hr 21 Day 60 Day 90 Day Yearly 0.03 39.12 38.06 33.11 22.84 17.22 4.49 0.06 22.61 21.85 18.70 13.67 10.40 2.74 0.10 20.75 19.75 16.57 10.97 8.12 2.09 0.13 19.34 18.38 16.04 10.96 8.04 2.06 0.16 19.00 18.37 15.54 10.00 7.34 1.88 0.19 18.41 17.62 15.01 9.70 7.19 1.87 0.23 15.12 14.65 12.56 8.23 6.14 1.59 0.26 14.67 14.10 12.05 8.19 6.02 1.54 0.29 10.49 10.05 8.57 5.68 4.18 1.08 0.32 8.95 8.66 7.27 5.19 3.88 1.00 0.35 6.92 6.61 5.46 3.39 2.47 0.63 0.39 4.24 4.12 3.50 2.68 2.04 0.54 0.42 4.22 4.03 3.35 2.42 1.87 0.50 0.45 4.06 3.85 3.23 2.23 1.64 0.43 0.48 3.65 3.50 3.16 2.16 1.62 0.42 0.52 3.60 3.44 2.92 2.16 1.60 0.42 0.55 3.42 3.27 2.66 1.68 1.25 0.33 0.58 2.61 2.50 2.15 1.64 1.24 0.32 0.61 2.44 2.34 2.01 1.40 1.03 0.27 0.65 2.37 2.26 1.97 1.28 0.98 0.26 0.68 2.09 2.01 1.72 1.28 0.94 0.25 0.71 1.83 1.74 1.45 1.00 0.79 0.21 0.74 1.82 1.72 1.37 0.95 0.71 0.19 0.77 1.57 1.50 1.26 0.92 0.69 0.18 0.81 1.51 1.43 1.23 0.84 0.64 0.17 0.84 1.36 1.29 1.18 0.83 0.62 0.16 0.87 0.86 0.81 0.68 0.43 0.34 0.09 0.90 0.70 0.66 0.56 0.42 0.31 0.08 0.94 0.65 0.61 0.50 0.33 0.26 0.07 0.97 0.55 0.52 0.44 0.32 0.24 0.06

0.10 20.61 19.61 16.52 10.97 8.11 2.08 Average of yearly averages: 0.86

Inputs generated by pe5.pl - Novemeber 2006

Data used for this run: Output File: MScorndw0.210 Metfile: w03940.dvf PRZM scenario: MScornSTD.txt EXAMS environment file: ir298.exv Chemical Name: Thiamethoxam Description Variable Name Value Units Comments Molecular weight mwt 291.7 g/mol Henry's Law Const. henry 4.65E-15 atm-m^3/mol Vapor Pressure vapr 4.95E-11 torr Solubility sol 4100 mg/L Kd Kd mg/L Koc Koc 70.23 mg/L Photolysis half-life kdp 4.46 days Half-life Aerobic Aquatic Metabolism kbacw 19.92 days Halfife Anaerobic Aquatic Metabolism kbacs 43.98 days Halfife Aerobic Soil Metabolism asm 480.92 days Halfife Hydrolysis: pH 7 0 days Half-life Method: CAM 4 integer See PRZM manual Incorporation Depth: DEPI 2.54 cm Application Rate: TAPP 0.236 kg/ha Application Efficiency: APPEFF 1 fraction Spray Drift DRFT 0 fraction of application rate applied to pond Application Date Date 03-04 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)

# Page22 of25 stored as NEcorndw0.210.out Chemical: Thiamethoxam PRZM environment: NECornStd.txt modified Monday, 25 August 2008 at 15:38:46 EXAMS environment: ir298.exv modified Tueday, 26 August 2008 at 06:14:07 Metfile: w94918.dvf modified Tueday, 26 August 2008 at 06:16:35 Water segment concentrations (ppb)

Year Peak 96 hr 21 Day 60 Day 90 Day Yearly 1961 8.08 7.78 6.47 4.05 2.98 0.80 1962 6.27 5.93 4.97 3.14 2.37 0.67 1963 3.29 3.07 2.69 1.72 1.27 0.36 1964 12.26 11.69 9.52 6.02 4.41 1.19 1965 13.98 13.48 11.36 7.25 5.37 1.48 1966 19.55 18.89 15.80 10.03 7.37 2.02 1967 4.08 3.94 3.41 2.23 1.66 0.51 1968 2.67 2.57 2.21 1.43 1.06 0.30 1969 13.75 13.17 10.92 7.52 5.59 1.50 1970 3.85 3.66 3.07 2.13 1.58 0.46 1971 12.30 11.82 9.91 6.10 4.54 1.23 1972 0.54 0.52 0.43 0.31 0.24 0.09 1973 8.71 8.38 6.67 4.10 3.02 0.81 1974 17.03 16.34 14.02 9.13 6.65 1.79 1975 0.70 0.67 0.54 0.35 0.26 0.11 1976 24.26 23.51 19.45 12.20 8.91 2.36 1977 9.09 8.61 6.87 4.19 3.05 0.86 1978 0.92 0.86 0.80 0.65 0.51 0.16 1979 1.50 1.41 1.24 1.03 0.79 0.22 1980 3.77 3.59 2.88 1.80 1.31 0.35 1981 4.99 4.80 4.07 2.61 2.04 0.59 1982 17.81 17.10 15.29 10.49 7.84 2.15 1983 7.93 7.66 6.46 4.84 3.65 1.03 1984 4.54 4.46 3.87 2.55 1.90 0.53 1985 3.32 3.20 2.68 1.78 1.34 0.38 1986 1.19 1.11 0.87 0.61 0.47 0.15 1987 7.80 7.42 5.91 3.81 2.80 0.76 1988 10.39 9.87 8.31 5.10 3.73 1.00 1989 1.20 1.14 0.90 0.70 0.53 0.17 1990 2.69 2.61 2.27 1.57 1.19 0.33

Sorted results Prob. Peak 96 hr 21 Day 60 Day 90 Day Yearly 0.03 24.26 23.51 19.45 12.20 8.91 2.36 0.06 19.55 18.89 15.80 10.49 7.84 2.15 0.10 17.81 17.10 15.29 10.03 7.37 2.02 0.13 17.03 16.34 14.02 9.13 6.65 1.79 0.16 13.98 13.48 11.36 7.52 5.59 1.50 0.19 13.75 13.17 10.92 7.25 5.37 1.48 0.23 12.30 11.82 9.91 6.10 4.54 1.23 0.26 12.26 11.69 9.52 6.02 4.41 1.19 0.29 10.39 9.87 8.31 5.10 3.73 1.03 0.32 9.09 8.61 6.87 4.84 3.65 1.00 0.35 8.71 8.38 6.67 4.19 3.05 0.86 0.39 8.08 7.78 6.47 4.10 3.02 0.81 0.42 7.93 7.66 6.46 4.05 2.98 0.80 0.45 7.80 7.42 5.91 3.81 2.80 0.76 0.48 6.27 5.93 4.97 3.14 2.37 0.67 0.52 4.99 4.80 4.07 2.61 2.04 0.59 0.55 4.54 4.46 3.87 2.55 1.90 0.53 0.58 4.08 3.94 3.41 2.23 1.66 0.51 0.61 3.85 3.66 3.07 2.13 1.58 0.46 0.65 3.77 3.59 2.88 1.80 1.34 0.38 0.68 3.32 3.20 2.69 1.78 1.31 0.36 0.71 3.29 3.07 2.68 1.72 1.27 0.35 0.74 2.69 2.61 2.27 1.57 1.19 0.33 0.77 2.67 2.57 2.21 1.43 1.06 0.30 0.81 1.50 1.41 1.24 1.03 0.79 0.22 0.84 1.20 1.14 0.90 0.70 0.53 0.17 0.87 1.19 1.11 0.87 0.65 0.51 0.16 0.90 0.92 0.86 0.80 0.61 0.47 0.15 0.94 0.70 0.67 0.54 0.35 0.26 0.11 0.97 0.54 0.52 0.43 0.31 0.24 0.09

0.10 17.73 17.02 15.16 9.94 7.30 1.99 Average of yearly averages: 0.81

Inputs generated by pe5.pl - Novemeber 2006

Data used for this run: Output File: NEcorndw0.210 Metfile: w94918.dvf PRZM scenario: NECornStd.txt EXAMS environment file: ir298.exv Chemical Name: Thiamethoxam Description Variable Name Value Units Comments Molecular weight mwt 291.7 g/mol Henry's Law Const. henry 4.65E-15 atm-m^3/mol Vapor Pressure vapr 4.95E-11 torr Solubility sol 4100 mg/L Kd Kd mg/L Koc Koc 70.23 mg/L Photolysis half-life kdp 4.46 days Half-life Aerobic Aquatic Metabolism kbacw 19.92 days Halfife Anaerobic Aquatic Metabolism kbacs 43.98 days Halfife Aerobic Soil Metabolism asm 480.92 days Halfife Hydrolysis: pH 7 0 days Half-life Method: CAM 4 integer See PRZM manual Incorporation Depth: DEPI 2.54 cm Application Rate: TAPP 0.236 kg/ha Application Efficiency: APPEFF 1 fraction Spray Drift DRFT 0 fraction of application rate applied to pond Application Date Date 18-05 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)

# Page23 of25 stored as OHcorndw0.210.out Chemical: Thiamethoxam PRZM environment: OHCornSTD.txt modified Tueday, 29 May 2007 at 13:59:54 EXAMS environment: ir298.exv modified Tueday, 26 August 2008 at 06:14:07 Metfile: w93815.dvf modified Tueday, 26 August 2008 at 06:16:19 Water segment concentrations (ppb)

Year Peak 96 hr 21 Day 60 Day 90 Day Yearly 1961 16.12 15.75 14.11 10.40 8.07 2.21 1962 0.23 0.22 0.17 0.11 0.10 0.06 1963 0.88 0.84 0.72 0.47 0.39 0.12 1964 1.66 1.61 1.36 0.92 0.70 0.19 1965 5.91 5.74 4.81 3.19 2.41 0.65 1966 3.19 3.11 2.70 1.97 1.50 0.41 1967 1.21 1.17 1.06 0.72 0.55 0.15 1968 2.35 2.26 2.13 1.48 1.12 0.31 1969 1.21 1.18 1.11 0.79 0.60 0.17 1970 15.75 15.27 13.01 8.86 6.69 1.79 1971 2.19 2.10 1.87 1.25 0.94 0.27 1972 1.55 1.51 1.36 0.96 0.73 0.20 1973 1.22 1.18 1.02 0.77 0.60 0.16 1974 0.68 0.65 0.56 0.40 0.31 0.09 1975 14.97 14.73 12.72 8.68 6.59 1.78 1976 2.33 2.26 1.96 1.44 1.12 0.33 1977 4.12 3.91 3.21 2.23 1.69 0.46 1978 3.21 3.12 2.73 1.99 1.52 0.42 1979 0.17 0.17 0.15 0.12 0.10 0.03 1980 1.33 1.28 1.13 0.78 0.59 0.16 1981 0.81 0.78 0.71 0.52 0.39 0.11 1982 0.36 0.35 0.29 0.21 0.16 0.04 1983 6.92 6.77 6.03 4.31 3.27 0.88 1984 0.74 0.71 0.61 0.40 0.32 0.10 1985 3.43 3.28 2.80 1.93 1.47 0.40 1986 0.12 0.12 0.09 0.07 0.05 0.02 1987 0.17 0.16 0.15 0.10 0.08 0.02 1988 0.51 0.48 0.39 0.24 0.18 0.05 1989 8.47 8.35 7.36 5.25 4.03 1.10 1990 5.54 5.35 4.79 3.38 2.57 0.72

Sorted results Prob. Peak 96 hr 21 Day 60 Day 90 Day Yearly 0.03 16.12 15.75 14.11 10.40 8.07 2.21 0.06 15.75 15.27 13.01 8.86 6.69 1.79 0.10 14.97 14.73 12.72 8.68 6.59 1.78 0.13 8.47 8.35 7.36 5.25 4.03 1.10 0.16 6.92 6.77 6.03 4.31 3.27 0.88 0.19 5.91 5.74 4.81 3.38 2.57 0.72 0.23 5.54 5.35 4.79 3.19 2.41 0.65 0.26 4.12 3.91 3.21 2.23 1.69 0.46 0.29 3.43 3.28 2.80 1.99 1.52 0.42 0.32 3.21 3.12 2.73 1.97 1.50 0.41 0.35 3.19 3.11 2.70 1.93 1.47 0.40 0.39 2.35 2.26 2.13 1.48 1.12 0.33 0.42 2.33 2.26 1.96 1.44 1.12 0.31 0.45 2.19 2.10 1.87 1.25 0.94 0.27 0.48 1.66 1.61 1.36 0.96 0.73 0.20 0.52 1.55 1.51 1.36 0.92 0.70 0.19 0.55 1.33 1.28 1.13 0.79 0.60 0.17 0.58 1.22 1.18 1.11 0.78 0.60 0.16 0.61 1.21 1.18 1.06 0.77 0.59 0.16 0.65 1.21 1.17 1.02 0.72 0.55 0.15 0.68 0.88 0.84 0.72 0.52 0.39 0.12 0.71 0.81 0.78 0.71 0.47 0.39 0.11 0.74 0.74 0.71 0.61 0.40 0.32 0.10 0.77 0.68 0.65 0.56 0.40 0.31 0.09 0.81 0.51 0.48 0.39 0.24 0.18 0.06 0.84 0.36 0.35 0.29 0.21 0.16 0.05 0.87 0.23 0.22 0.17 0.12 0.10 0.04 0.90 0.17 0.17 0.15 0.11 0.10 0.03 0.94 0.17 0.16 0.15 0.10 0.08 0.02 0.97 0.12 0.12 0.09 0.07 0.05 0.02

0.10 14.32 14.09 12.18 8.34 6.33 1.72 Average of yearly averages: 0.45

Inputs generated by pe5.pl - Novemeber 2006

Data used for this run: Output File: OHcorndw0.210 Metfile: w93815.dvf PRZM scenario: OHCornSTD.txt EXAMS environment file: ir298.exv Chemical Name: Thiamethoxam Description Variable Name Value Units Comments Molecular weight mwt 291.7 g/mol Henry's Law Const. henry 4.65E-15 atm-m^3/mol Vapor Pressure vapr 4.95E-11 torr Solubility sol 4100 mg/L Kd Kd mg/L Koc Koc 70.23 mg/L Photolysis half-life kdp 4.46 days Half-life Aerobic Aquatic Metabolism kbacw 19.92 days Halfife Anaerobic Aquatic Metabolism kbacs 43.98 days Halfife Aerobic Soil Metabolism asm 480.92 days Halfife Hydrolysis: pH 7 0 days Half-life Method: CAM 4 integer See PRZM manual Incorporation Depth: DEPI 2.54 cm Application Rate: TAPP 0.236 kg/ha Application Efficiency: APPEFF 1 fraction Spray Drift DRFT 0 fraction of application rate applied to pond Application Date Date 24-04 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)

# Page24 of25

Appendix B. SCI

-GROW Output Files:
Dry Bulb Onion:

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:Thiamethoxam on Dry Bulb Onion time is 4/16/2010 14: 7:45

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

------------------------------------------------------------------------ 0.300 1.0 0.300 4.80E+01 302.0

------------------------------------------------------------------------ groundwater screening cond (ppb) = 4.66E+00

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



# Peanuts:

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:Thiamethoxam time is 5/11/2010 16:39:56

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

------------------------------------------------------------------------ 0.080 1.0 0.080 4.80E+01 302.0

------------------------------------------------------------------------ groundwater screening cond (ppb) = 1.24E+00

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



# Alfalfa:

# Page25 of25

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:Thiamethoxam time is 5/11/2010 16:41:54

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

------------------------------------------------------------------------ 0.022 1.0 0.022 4.80E+01 302.0

------------------------------------------------------------------------ groundwater screening cond (ppb) = 3.42E

-01

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