Sethoxydim Risk Assessment

Worksheet Table of Contents 
Section/Title 
Page No. 
GENERAL ASSUMPTIONS, VALUES, and MODELS  
Worksheet A01[CONST]: Constants and conversion factors used in calculations 
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Worksheet A02 [STD]: General Assumptions Used in Worker Exposure Assessments 
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Worksheet A03 [PUBL]: General Assumptions Used in Exposure Assessments for the 
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General Public 
Worksheet A04 [HK]: Estimated concentrations of pesticides on various types of vegetation 
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immediately after application at 1 lb/acre  
Worksheet A05 [FRUIT]: Concentrations of chemical on spheres (berries) at the specified 
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application rate. 
Worksheet A06 [OFFSITE]:Central estimates of off-site drift associated with the ground 
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application of pesticides  
Worksheet A07a [KAMODEL]: Estimate of first-order absorption rate (k
a
 in hour
-1
) and 
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95% confidence intervals  
Worksheet A07b [KPMODEL]: Estimate of dermal permeability (K
p
 in cm/hr) and 95% 
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confidence intervals  
CHEMICAL SPECIFIC VALUES and ESTIMATES  
Worksheet B01 [APPL]: Anticipated Application and Dilution Rates. 
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Worksheet B02 [CHEM]: Chemical specific values used in exposure assessment worksheets. 
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Worksheet B03 [KA_CHEM]: Calculation of first-order dermal absorption rate (k
a
) for 
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sethoxydim.  
Worksheet B04 [KP_CHEM]: Calculation of dermal permeability rate (K
p
) in cm/hour for 
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sethoxydim.  
Worksheet B05 [DERM]: Summary of chemical specific dermal absorption values used for 
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sethoxydim dermal absorption.  
Worksheet B06 [AMBWAT]: Estimates of the concentration of sethoxydim in ambient 
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water per lb applied per acre based on monitoring data.  
EXPOSURE ASSESSMENTS for WORKERS 
Worksheet C01a: Worker exposure estimates for directed foliar (backpack) applications of 
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sethoxydim  
Worksheet C01b: Worker exposure estimates for boom spray (hydraulic ground spray) 
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applications of sethoxydim  
Worksheet C01c: Worker exposure estimates for aerial applications of sethoxydim 
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Worksheet C02a: Workers: Dermal Exposure Assessments Using Zero-Order Absorption 
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for one minute. 
Worksheet C02b: Workers: Dermal Exposure Assessments Using Zero-Order Absorption 
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for one hour.  
Worksheet C03a: Accidental Spill onto the Hands for 1 Hour Based on the Assumption of 
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First-Order Absorption  
Worksheet C03b: Accidental Spill onto the Lower Legs for 1 Hour Based on the 
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Assumption of First-Order Absorption  
EXPOSURE ASSESSMENTS for the GENERAL PUBLIC 
Worksheet D01a: Direct spray of child. 
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Worksheet D01b: Direct spray of woman. 
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Worksheet D02: Dermal contact with contaminated vegetation, acute exposure scenario. 
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Worksheet Table of Contents 
Section/Title 
Page No.  
Worksheet D03: Consumption of contaminated fruit, acute exposure scenario. 
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Worksheet D04: Consumption of contaminated fruit, chronic exposure scenario. 
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Worksheet D05: Consumption of contaminated water following an accidental spill, acute 
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exposure scenario.  
Worksheet D06: Consumption of water from a stream contaminated by runoff or 
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percolation, acute exposure scenario.  
Worksheet D07: Consumption of contaminated water, chronic exposure scenario. 
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Worksheet D08a: Consumption of contaminated fish, acute exposure scenarios for 
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recreational fisherman.  
Worksheet D08b: Consumption of contaminated fish, acute exposure scenarios for 
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subsistence populations.  
Worksheet D09a: Consumption of contaminated fish, chronic exposure scenario for 
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recreational fisherman..  
Worksheet D09b: Consumption of contaminated fish, chronic exposure scenario for 
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subsistence populations.  
HUMAN HEALTH EFFECTS SUMMARY TABLES  
Worksheet E01: Summary of worker exposure scenarios 
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Worksheet E02: Summary of risk characterization for workers 
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Worksheet E03: Summary of exposure scenarios for the general public 
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Worksheet E04: Summary of risk characterization for the general public 
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EXPOSURE ASSESSMENTS FOR TERRESTRIAL SPECIES  
Worksheet F01: Direct spray of small mammal assuming first order absorption kinetics. 
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Worksheet F02a: Direct spray of small mammal assuming 100% absorption over the first 24 
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hour period.  
Worksheet F02b: Direct spray of bee assuming 100% absorption over the first 24 hour 
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period.  
Worksheet F03: Consumption of contaminated fruit by a small mammal, acute exposure 
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scenario.  
Worksheet F04a: Consumption of contaminated fruit by a small mammal, chronic exposure 
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scenario at application site.  
Worksheet F04b: Consumption of contaminated fruit by a small mammal, chronic exposure 
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scenario off-site.  
Worksheet F05: Consumption of contaminated water by a small mammal, acute exposure 
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scenario for an accidental spill.  
Worksheet F06: Consumption of contaminated water by a small mammal, acute exposure 
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scenario for runoff or percolation into a stream.  
Worksheet F07: Consumption of contaminated water, chronic exposure scenario. 
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Worksheet F08: Consumption of contaminated fish by bird, acute exposure scenario. 
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Worksheet F09: Consumption of contaminated fish by bird, chronic exposure scenario. 
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Worksheet F10: Consumption of contaminated vegetation by a large mammal, acute 
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exposure scenario.  
Worksheet F11a: Consumption of contaminated vegetation by a large mammal, chronic 
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exposure scenario on-site.  

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