文档介绍：The Following revisions have been made to this document since the December 2015 posting:
Updated the Measures of Terrestrial Exposure Section (3). The lower bound use rate was changed from to lb ./A, which resulted in changes in the corresponding EECs (represented in Table 3-17 and Figures).
Contents
1 Environmental Transport and Fate Characterization 3
2 Measures of Aquatic Exposure 7
Aquatic Exposure Models 7
HUC and Use Site Crosswalk 2
Scenario Selection 2
Application Practices 2
Application Method 2
Spray drift 3
Application Timing 4
Special Agricultural Considerations 5
Multiple Crop-cycles Per Year 5
Cranberry Modeling for Surface Water 6
PFAM 6
PRZM5/VVWM 6
Non-Agricultural Uses and Considerations 7
Urban Exposure Model 7
Aquatic Modeling Input Parameters 10
Aquatic Modeling Results 13
Aquatic Modeling Sensitivity Analysis 21
Available Monitoring Data 25
Field Studies 25
General Monitoring Data 26
Surface Water 27
Sediment 29
Atmospheric 30
Monitoring Results 33
WARP Model and Extrapolation of Monitoring Results 34
Aquatic Exposure Summary 35
Uncertainties in Aquatic Modeling and Monitoring Estimates 36
Surface Water Aquatic Modeling 36
Aquatic Bins 3 and 4 37
3 Measures of terrestrial exposure 38
Introduction 38
Estimated concentrations in terrestrial food items (mg ./kg-food) 39
Terrestrial invertebrates 1
Terrestrial plants (seeds, fruit, nectar and leaves) 1
Terrestrial vertebrates (birds, mammals, amphibians, reptiles) 4
Estimated concentrations in aquatic food items (mg ./kg-food) 4
Aquatic plants 4
Aquatic invertebrates 5
Fish 6
Figures
Figure 3-1. Hydrologic Unit Code (HUC) 2-digit Regions and Associated Metrological Data 1
Figure 3-2. Urban Lot Conceptual Model 9
Figur