# EMPM Agendas 2004-2010, 2012-2015 (No meetings in 2009 or 2011) 

# Environmental Modeling Public Meeting April 28, 2015 Agenda Environmental Modeling Public Meeting April 28, 2015 Agenda Time Presentation Title Presenter(s) 9:00 9:20 Welcome and Introductions Meridith Fry, R. David Jones Opening Remarks Jim Cowles 9:20 - 9:50 Evaluation of PRZM Volatilization Algorithm for Soil Pesticide Applications Gabe Rothman Environmental Fate and Effects Division, Office of Pesticide Programs 9:50 - 10:20 Development and Testing of an Updated AGRO Model (AGRO-2014) for Use in Predicting Aquatic and Benthic Pesticide Concentrations in Ponds Lauren Padilla Stone Environmental, Inc.
10:20 - 10:50 Weather data in aquatic exposure modeling Meridith Fry Environmental Fate and Effects Division, Office of Pesticide Programs 10:50 - 11:05 Break
11:05 - 11:35 Comment on Nonlinear Sorption, Nonequilibrium, and Sorbed-Phase Degradation with PRZM5 Dirk Young Environmental Fate and Effects Division, Office of Pesticide Programs
11:35 - 12:05 Encouraging the Use of Drift Reduction Technologies in the United States Anne Overstreet, Faruque Khan Field and External Affairs Division and Environmental Fate and Effects Division, Office of Pesticide Programs 12:05 - 1:15 Lunch
1:15 - 1:45 Aquatic Modeling to Estimate Pesticide Exposure to Threatened and Endangered Species Chuck Peck Environmental Fate and Effects Division, Office of Pesticide Programs 1:45 - 2:15 Application of a Probabilistic Aquatic Exposure Modeling Approach for Use in Endangered Species Assessments Michael Winchell Stone Environmental, Inc.
2:15 - 2:45 A probabilistic approach for estimating the spatial extent of pesticide agricultural use sites and potential co-occurrence with listed species for use in ecological risk assessments Katie Budreski Stone Environmental, Inc.
2:45 - 3:00 Break
3:00 - 3:30 Updates to the Standard Operating Procedure for Calculating Degradation Kinetics as Part of the Pesticide Registration Process in the United States Katrina White Environmental Fate and Effects Division, Office of Pesticide Programs 3:30 - 4:00 Statistical methods to select kinetics models for analysis of pesticide environmental fate data Jeremy Aldworth RTI
4:00 - 4:15 Remaining Questions and Meeting Wrap-up R. David Jones and Mark Corbin

# Agenda of the March 24, 2014 Exposure Modeling Public Meeting March 24, 2014 EMPM Agenda Time Presentation Title Presenter(s) 9:00 - 9:10 Welcome and Introductions Chris Koper, Melanie Biscoe
9:10 - 9:20 Opening Remarks Jim Cowles

9:20 - 9:50 Spatial Aquatic Model (SAM) pilot project update Nelson Thurman (EPA) Co-authors: Dirk Young, Shelly Thawley, Kurt Plunke, Ron Parker, Paul Mastradone, Chris Koper, Tripp Hook, Meridith Fry, Tanja Crk, Jim Carleton, Gabe Rothman (EPA) 9:50 - 10:10 Quality Control Testing of the Surface Water Concentration Calculator (SWCC) Karen Milians (EPA) Co-authors: Meridith Fry, He Zhong, Dirk Young (EPA)
10:10 - 10:30 Development of conceptual models for estimating aquatic exposure from the use of pesticides on rice using the Pesticide Flooded Application Model Katrina White (EPA) Co-authors: Marietta Echeverria, Greg Orrick, Chuck Peck, Andrew Shelby, Nelson Thurman, Dirk Young (EPA) 10:30 - 10:50 Break
10:50 - 11:10 Evaluation of NAFTA kinetics guidance Russell Jones (Bayer) Co-authors: Jane Tang (Bayer), Michael Huang (DuPont), Wenlin Chen (Syngenta), Richard Allen (Valent), Sue Hayes (Syngenta), Robin Sur (Bayer) 11:10 - 11:30 Comparison of multiple spray drift deposition data sets Scott Jackson (BASF)

11:30 - 11:50 Guidance on Modeling Offsite Deposition of Pesticides via Spray Drift Katrina White (EPA) Co-authors: Melanie Biscoe, Marietta Echeverria, Meredith Fry, Jim Hetrick, Greg Orrick, Chuck Peck, Mohammed Ruhman, Andrew Shelby, Nelson Thurman, Dirk Young (EPA) 11:50 - 12:10 Use of the OCED ENASGIPS tool in US settings Gerco Hoogeweg (Waterborne) Co-authors: Shelby Zelonis, Cecilia Mucha Hirata, Nathan Snyder (Waterborne) 12:10 - 1:10 Lunch
1:10 - 1:30 A better sorption model for predicting pesticide behavior Qingli Ma (Exponent) Co-authors: Richard Reiss (Exponent) and Paul Whatling (Cheminova)
1:30 - 1:50 The significance of time-dependent sorption on leaching potential: A comparison of measured field results and modeled estimates Timothy Negley (ARCADIS) Co-authors: Kacie Gehl, Andy Newcombe (ARCADIS), Richard Allen (Valent), Jane Tang, Dan Dyer (Bayer) 1:50 - 2:10 Evaluation of PRZM-GW using long-term ground water monitoring data Jane Tang (Bayer) Co-authors: Robin Sur, Dan Dyer, Pete Coody (Bayer) 2:10 - 2:30 Break
2:30 - 2:50 Comparing ground water models why are there differences? Nathan Snyder (Waterborne) Co-author: Amy Ritter, Mark Cheplick (Waterborne), Daniel Perkins (FMC) 2:50 - 3:10 Modeling pesticide fate and transport through flowing water bodies for endangered species assessment in the California Central Valley Lauren Padilla (Stone) Co-authors: Katie Budreski, Michael Winchell (Stone), JiSu Bang, Natalia Peranginangin (Syngenta) 3:10 - 3:30 Estimating the magnitude of pesticide effects on avian reproductive success: Markov chain nest productivity model (MCnest) Kris Garber and Matt Etterson (EPA) Co-authors: Rick Bennett (EPA)3:30 - 3:50 Implementation of the Pesticide Root Zone Model Groundwater Rochelle Bohaty (EPA) Co-authors: Michael Barrett, Jim Wolf, and Dirk Young (EPA) 3:50 - 4:30 Meeting Wrap-Up 

# Agenda of the October 28, 2014 Exposure Modeling Public Meeting October 28, 2014 EMPM Agenda Time Presentation Title Presenter(s) 9:00 - 9:10 Welcome and Introductions Opening Remarks A Note on Spatial Aquatic Modeling (SAM) Melanie Biscoe, Chris Koper Jim Cowles Nelson Thurman 9:10 - 9:40 Ecological modeling: Exploring the Effects of Pesticides at the Population Level Andrew Kanarek Environmental Fate and Effects Division, Office of Pesticide Programs 9:40 - 10:10 Modeling Population and Community Effects of Herbicide Drift Jane Tang Bayer Crop Science 10:10 - 10:40 Modeling Rodenticide Efficacy in Controlling Norway Rat Populations Alex Francisco Arcadis
10:40 - 10:55 Break
10:55 - 11:25 Population Modeling of Endangered Species Valery Forbes University of NebraskaLincoln 11:25 - 11:55 Overview of the Terrestrial Investigation Model (v3.0) Kris Garber Environmental Fate and Effects Division, Office of Pesticide Programs 11:55 - 1:00 Lunch

1:00 - 1:30 A Comparison of PRZM3 and PRZM5 Simulations: Evaluation Across a Range of Standard Scenarios and Chemical Properties Lauren Padilla Stone Environmental, Inc.
1:30 - 2:00 Methods for predicting atrazine peak concentrations of nondaily surface water monitoring Wenlin Chen Syngenta Jeremy Aldworth RTI Interantional 2:00 - 2:30 Overview of Statistical Methods to Quantify Uncertainty of Pesticide Concentrations in Surface Water Monitoring Data James Hetrick Environmental Fate and Effects Division, Office of Pesticide Programs 2:30 - 2:45 Break 2:45 - 3:15 SWMM/AGRO Model Michael Winchell Stone Environmental, Inc. 3:15 - 3:45 Improved Urban Modeling Approach to Evaluate Pesticide Product for Impacts to Surface Waters in California Yuzhou Luo California Department of Pesticide Regulation 3:45 - 4:15 Guidance for addressing unextracted residues in laboratory studies Gregory Orrick Environmental Fate and Effects Division, Office of Pesticide Programs 4:15 - 4:30 Remaining Questions and Meeting Wrap-up Chris Koper and Mark Corbin 

# Agenda of the March 19, 2013 Exposure Modeling Public Meeting March 19, 2013 EMPM Agenda Time Presentation Number and Title Presenter(s) Source9:00 - 9:10 Welcome and Introductions Marietta Echeverria, Gabe Rothman, and Jim Carleton

EPA 9:10 - 9:20 Opening Remarks Don Brady

9:20 - 9:45 PRZM GW: Implementation and Case Studies Reuben Baris, Michael Barrett, Rochelle Bohaty, Marietta Echeverria, Dirk Young, and James Wolf 9:45 - 10:10 Surface Water Calculator Dirk Young
10:10 - 10:35 Rice Modeling: A Case Study Chuck Peck
10:35 - 10:45 Break
10:45 - 11:10 Status of Drinking Water Intake Watershed PCA Development Project Jim Carleton

EPA 11:10 - 11:35 Spatial Aquatic Model (SAM) Pilot Project Nelson Thurman
11:35 - 12:00 Audrey III A Tier II Plant Exposure Estimation Tool R. David Jones, Chuck Peck, and Frank Farruggia 12:00 - 1:00 Lunch
1:00 - 1:30 Implementation of Vegetative Buffer Strip Effectiveness in Removing Pesticides in Regulatory Assessments Bjoern Roepke, Russell L. Jones, and George Sabbagh
Public Presentations 1:30 - 2:00 iSTREEM © A Web-Based River Chemical Concentration Estimation Model Xinhao Wang and Paul DeLeo
2:00 - 2:30 Monitoring and Modeling the Fate and Transport of a Pesticide Metabolite from Groundwater Recharge to Drinking Water R. Sur, T. Oertel, M. Himml, and G. Görlitz 2:30 - 2:45 Break
2:45 - 3:15 Development and Validation of an Approach for Modeling Pyrethroid Residues in Urban Streams Michael Winchell, Scott Jackson, and Gary Mitchell Public Presentations 3:15 - 3:45 Evaluation of a Simplified SWAT Model Approach for Prediction of Insecticide Concentrations in a Small Watershed in Northwestern Oregon Natalia Peranginangin, Michael F. Winchell, and Solomon Folle 3:45 - 4:00 Meeting Wrap-Up 

# Agenda of the October 8, 2013 Exposure Modeling Public Meeting Cancelled due to the Government Shutdown Oct 1-16 th October 8, 2013 EMPM Agenda Time Presentation Number and Title Presenter(s) 9:00 - Welcome and Introductions Marietta Echeverria, Gabe Rothman, and Jim Carleton9:10 9:10 - 9:20 Opening Remarks Don Brady
9:20 - 9:50 Estimating the magnitude of pesticide effects on avian reproductive success: Markov chain nest productivity model (MCnest) Kris Garber (EPA) Co-authors: Rick Bennett, Matt Etterson (EPA) 9:50 - 10:10 Testing the Surface Water Calculator Karen Milians (EPA) Co-authors: Meridith Fry, He Zhong, Dirk Young (EPA)
10:10 - 10:30 Development of conceptual models for estimating aquatic exposure from the use of pesticides on rice using the Pesticide Flooded Application Model Katrina White (EPA) Co-authors: Marietta Echeverria, Greg Orrick, Chuck Peck, Andrew Shelby, Nelson Thurman, Dirk Young (EPA) 10:30 - 10:50 Break
10:50 - 11:10 Evaluation of NAFTA kinetics guidance Russell Jones (Bayer) Co-authors: Jane Tang (Bayer), Michael Huang (DuPont), Wenlin Chen (Syngenta), Richard Allen (Valent), Sue Hayes (Syngenta), Robin Sur (Bayer) 11:10 - 11:30 Comparison of multiple spray drift deposition data sets Scott Jackson (BASF)
11:30 - 11:50 Guidance on Modeling Offsite Deposition of Pesticides via Spray Drift Katrina White (EPA) Co-authors: Marietta, Echeverria, Faruque Khan, Chuck Peck (EPA) 11:50 - 12:10 Use of the OCED ENASGIPS tool in US settings Shelby Zelonis or Gerco Hoogeweg (Waterborne) Coauthors: Cecilia Mucha Hirata, Nathan Snyder (Waterborne) 12:10 - 1:10 Lunch
1:10 - 1:30 A better sorption model for predicting pesticide behavior Qingli Ma (Exponent) Co-authors: Richard Reiss (Exponent) and Paul Whatling (Cheminova)
1:30 - 1:50 The significance of time-dependent sorption on leaching potential: A comparison of measured field results and modeled estimates Timothy Negley (ARCADIS) Co-authors: Kacie Gehl, Andy Newcombe (ARCADIS), Richard Allen (Valent), Jane Tang, Dan Dyer (Bayer) 1:50 - 2:10 Evaluation of PRZM-GW using long-term ground water monitoring data Jane Tang (Bayer) Co-authors: Robin Sur, Dan Dyer, Pete Coody (Bayer) 2:10 - 2:30 Break
2:30 - 2:50 Comparing ground water models why are there differences? Amy Ritter (Waterborne)
2:50 - 3:10 Modeling pesticide fate and transport through flowing water bodies for endangered species assessment in the California Central Valley Michael Winchell (Stone) Co-authors: Katie Budreski, Lauren Padilla (Stone), JiSu Bang, Natalia Peranginangin (Syngenta) 3:10 - 3:30 Spatial Aquatic Model (SAM) pilot project update Nelson Thurman (EPA) Co-authors: Dirk Young, Shelly Thawley, Kurt Plunke, Ron Parker, Paul Mastradone, Chris Koper, Tripp Hook, Meridith Fry, Tanja Crk, Jim Carleton, Gabe Rothman (EPA) 3:30 - 4:00 Meeting Wrap-Up 

# Agenda of the March 20, 2012 Exposure Modeling Public MeetingMarch 20, 2012 EMPM Agenda and Abstracts Time Presentation Number and Title Presenter 9:00- 9:10 Welcome and Introductions Marietta Echeverria, Dirk Young, and Katrina White 9:10- 9:40 1 - NAFTA Guidance for Calculating Degradation Kinetics in Environmental Media Dirk Young and Ian Kennedy

9:40- 10:10 2 - Update: Implementation of PRZM-GW Reuben Baris, Michael Barrett, Rochelle F. H. Bohaty, Marietta Echeverria, Ian Kennedy, Greg Malis, Dirk Young, and James Wolf 10:10- 10:30 Break 10:30- 11:00 3 - Measuring and Estimating Concentrations in Drinking Water: A Historical Perspective Russell L. Jones

11:00- 11:30 4 - Improved Characterization of the Temporal and Spatial Variability of Potential Surface Water Drinking Water Exposure by Using Environmental and Historic Monitoring Databases Paul Hendley, Wenlin Chen, Robert Joseph, Ron Williams, Chris Harbourt and Paul Miller 11:30- 12:00 5 - Estimating Upper Centile Pesticide Concentrations and Sample Size Requirement Wenlin Chen, Paul Mosquin 12:00- 1:00 Lunch 1:00- 1:30 6 - Estimation of Upper Percentiles of Chlorpyrifos Surface Water Concentration from Yearly Monitoring Program Data Paul L. Mosquin, G. Gordon Brown, Roy W. Whitmore, Nick Poletika 1:30- 2:00 7 - Sampling Plans for Water Quality Assessment John W. Green

2:00- 2:30 8 - Update on Development of Drinking Water Intake Watershed PCAs Jim Carleton, Rochelle Bohaty, Marietta Echeverria, Nelson Thurman, Michelle Thawley, Katrina White, Mohammed Ruhman 2:30- 2:45 Break 2:45- 3:15 9 - Exposure Assessment for Pronamide Drinking Water Residues in California Central Coast Lettuce Production Areas Nick Poletika, Brian Bret, Mike Winchell
3:15- 3:45 10 - Hybrid PRZM: "Filling in the gaps" in Field Sampling Data Using Realistic Simulation Modeling Paul Miller, Chris Harbourt, William J. Northcott, Paul Hendley, and Jessie J. Prenger 3:45- 4:00 Meeting Wrap-Up 

# Agenda of the October 30, 2012 Exposure Modeling Public Meeting October 30, 2012 EMPM Agenda Time Presentation Number and Title Presenter(s) Subject 9:00 - 9:10 Welcome and Introductions Marietta Echeverria, Dirk Young, and Katrina White

EPA Updates and Presentations 9:10 - 9:20 Opening Remarks Don Brady

9:20 - 9:45 1. Development and Evaluation of the Pesticide Root Zone Model (PRZM) for Estimating Pesticide Concentrations in Groundwater Reuben Baris, Michael Barrett, Rochelle F. H. Bohaty, Marietta Echeverria, Ian Kennedy, Greg Malis, James Wolf, and Dirk Young
9:45 - 10:10 2. Status of Drinking Water Intake Watershed PCA Development Project Jim Carleton, Rochelle Bohaty, Tanja Crk, Marietta Echeverria, Mohammed Ruhman, Michelle Thawley, Nelson Thurman, Philip Villanueva, Katrina White10:10 - 10:35 3. RQ Calculations for Specific Listed Terrestrial Mammals, Birds, Reptiles, and Amphibians: Model Parameterization and Knowledgebase Development Kris Garber, Melissa Panger, Jean Holmes, Brian Anderson
10:35 - 10:55 Break
10:55 - 11:20 4. Aquatic Exposure Modeling Using Field Studies Zhenxu (Jane) Tang, Tharacad Ramanarayanan, Lisa Ortego, and Richard Allen Exposure in Surface Water 11:20 - 11:45 5. Rice Modeling: A Case Study Chuck Peck, Dirk Young

11:45 - 12:10 6. Evaluation of a Simplified SWAT Model Approach for Prediction of Insecticide Concentrations in a Small Watershed in Northwestern Oregon Natalia Peranginangin, Michael F. Winchell, Solomon Folle
12:10 - 1:30 Lunch
1:30 - 1:55 7. iSTREEM® a web-based river chemical concentration estimation model Paul C. DeLeo Exposure in Surface Water 1:55 - 2:20 8. Development and Validation of an Approach for Modeling Pyrethroid Residues in Urban Streams Michael Winchell, Scott Jackson, Brent Toth, John Hanzas, Gary Mitchell 2:20 - 2:45 9. Fate of Pyrethroid Insecticides in Wastewater Treatment Processes Daniel M. Tessier, Joy McGrath, Joseph Cleary Other
2:45 - 3:00 Break
3:00 - 3:25 10. Monitoring and Modeling the Fate and Transport of a Pesticide Metabolite from Groundwater Recharge to Drinking Water R. Sur, T. Oertel, M. Himml, G. Görlitz

Other 3:25 - 3:50 11. Comparison of Multiple Source Ground Spray Deposition Curves for Determination of Buffers in Simulation Models Scott H Jackson
3:50 - 4:00 Closing Remarks Dirk Young and Katrina White 

# Agenda of the July 27, 2010 Exposure Modeling Public Meeting July 2010 EMPM Agenda and Abstracts PRESENTER Time TOPIC Duration Peck/Baris 9:00 am Welcome and Introduction 5 minutes Michael Barrett, U.S. EPA Ian Kennedy, PMRA 9:05 am A Look at Prospective Ground-Water Monitoring Studies and their Utility for Developing Leaching Models 35 minutes Marty Williams, P.E., Waterborne Environmental Inc. 9:40 am Screening Approaches for Predicting Pesticide Concentrations in Groundwater 35 minutes

10:15 am Break 10 minutes David Valcore,Valcore Consulting Harold Thistle, USDA 10:25 am Mechanistic Ground Spray Boom Drift Model Development 35 minutes Nathan Snyder, Waterborne Environmental Inc. 11:00 am Using Modern Watershed and Cropping Data as a Basis for Estimating Percentage Crop Treatment 35 minutes

Jack Barbash and Frank Voss, USGS 11:35 am Design and Testing of a Process-Based Groundwater Vulnerability Assessment (P-GWAVA) System for Predicting the Concentrations of Agrichemicals in Ground Water Across the Conterminous United States Using Data from the National Water-Quality Assessment (NAWQA) Program 35 minutes
12:10 pm Lunch 80 minutes Michael Winchell, Stone Environmental Russell Jones, Bayer Cropscience 1:30 pm Comparison of Models for Estimating the Removal of Pesticides by Vegetative Buffer Strips 35 minutes

Marty Williams, P.E., Waterborne Environmental Inc. 2:05 pm Advances in Modeling Urban/Residential Pesticide Runoff 35 minutes

2:40 pm Break 5 minutes Nick Poletika, Dow Agrosciences 2:45 pm Spray Drift Exposure Refinements for Salmonid Off-Channel Habitat 35 minutes Mark Velleux, HydroQual, Inc 3:20 pm Spatially-Distributed Watershed Model for Chemical Exposure Assessment: Case Study of Antimicrobial Copper Uses in Urbanized Areas 35 minutes Peck/Baris 3:55 PM Wrap-up, Next Meeting 5 minutes Peck/Baris 4:00 PM Adjournment 

# Agenda of the March 11, 2008 Exposure Modeling Public Meeting Large Scale Monitoring for Contaminant Modeling: Strategies, Results, and Future Directions PRESENTER Time AM/PM TOPIC Duration (minutes) McKinnon/ Barrett 9:00 AM Welcome and Introduction 5
As needed 9:05 AM Updates 10 Cathleen Hapeman USDA-ARS 9:15 AM Temporal and spatial variability of pesticide residues in the Choptank River watershed 25 Chris Harbourt Waterborne Environmental 9:40 AM Water Quality in Domestic, Rural Wells Across 9 Midwestern States 25 Stephen Wente Biologist Environmental Fate and Effects Division, OPP 10:05 AM An Inverse Model for Determining Agricultural Watershed N Balances from Stream Nitrate Data 25

Break 10:30 AM Break 15 Wenlin ChenSyngenta Crop Protection, Inc. 10:45 AM A linear mixed model for assessing long-term trend in pesticide occurrence in raw water of U.S. Community Water Systems 25 Andy Newcombe LFR Inc. 11:10 AM Aldicarb Potable Well Monitoring Program - Study Design, Collection of Ancillary Field Data, and Relevance for Dietary Risk Assessments 25
Lunch 11:35 AM Lunch 60 Sandra Eberts U.S. Geological Survey 12:35 PM Pathways for drinking water well contamination 25 Bill Wilber U.S. Geological Survey 1:00 PM Overview of NAWQA status and plans for National monitoring of streams and ground water 45

Russell Jones Bayer CropScience 1:45 PM A Review of Monitoring Drinking Water from Surface Waters: Use in Dietary Risk Assessment; Site Selection and Auxillary Data Collection Issues 25

Break 2:10 PM Break 10 Greg Delzer U.S. Geological Survey 2:20 PM Source water and finished drinking water quality 25
Lester Yuan U.S. Environmental Protection Agency 2:45 PM Estimating the effects of pesticides on macroinvertebrate assemblage composition using field data 25
3:10 PM Wrap-up, Next Meeting 5 3:20 PM Adjournment 

# Agenda of the July 22, 2008 Exposure Modeling Public Meeting Terrestrial Modeling PRESENTER Time AM/PM TOPIC Duration (minutes) McKinnon/ Barrett 9:00 AM Welcome and Introduction 5
As needed 9:05 AM Updates 10 Kris Garber U.S. Environmental Protection Agency, Environmental Fate and Effects Division (EFED) 9:15 AM Discussion on PlantEX Model 20

Brian Anderson U.S. Environmental Protection Agency, EFED 9:35 AM Overview of TREX and THERPS 25
10:00 AM Break 15 Melissa Panger U.S. Environmental Protection Agency, EFED 10:15 AM Using Current Models For Assessing Risks to Non-target Terrestrial Invertebrates 15 Chris Salice U.S. Environmental Protection Agency, EFED 10:30 AM TIM Model (Avian Probalistic Model) 30 Siroos Mostaghimi U.S. Environmental Protection Agency, Antimicrobials Division 11:00 AM Brief overview of models used by Antimicrobials Division of EPA 30
11:30 AM Lunch 90 Gabe Rothman 1:00 Evaluating Exposure Incidents to VolatileU.S. Environmental Protection Agency, EFED PM Pesticides Using Atmospheric Prediction Tools 30 Ian van Wesenbeeck of Dow AgroSciences, LLC 1:30 PM Chlropricrin Manufacturing Task Force Presentation on Chain 2-D Model 40
Robert Everich of Makhteshim-Agan of North America Inc. 2:10 PM Riparian Ecosystem Management Model (REMM) and Runoff study to validate model 25 McKinnon/ Barrett 2:35 PM Wrap-up, Next Meeting 5 McKinnon/ Barrett 2:40 PM Adjournment 5 

# Agenda of the February 27, 2007 Exposure Modeling Public Meeting Room S-4370 Potomac Yard One 2777 Crystal Dr. Arlington, VA 22202 

## Morning Session 9:00 - 9:30 Welcome, introductions and brief updates 9:30 - 10:00 Degradation Influenced by Soil Temperature Under Cropped and Base Soil Conditions (Natalia Peranginangin, Syngenta Crop Protection, Inc.) 10:00 - 10:30 Development of MUSS (Jimmy Williams, USDA/ARS) Break 10:30 - 10:40 10:40 - 10:55 High Priority Changes for PRZM (Dirk Young, USEPA/EFED) 10:55 - 11:15 Sediment Concentrations: Implications of the Current Conceptual Model (Paul Hendley, Syngenta Crop Protection Inc.) 11:15 - 12:00 Factors Impacting Pesticide Runoff from Warm-Season Turf (Joe Massey, MSU) Lunch Break 12:00 - 1:15 

## Afternoon Session 1:15 - 1:45 Kinetic Analysis of Metabolism Data (William Eckel, USEPA/EFED) 1:45 - 2:00 Status Report on Field Evaluation and REMM Modeling of a Pesticide Runoff Buffer (Rob Everich, Makhteshim-Agan of North America) 2:00 - 2:30 Forest Canopy Delivery of Pesticides to a Riparian Buffer Area (Cliff Rice, USDA/ARS) Break 2:30 - 2:40 2:40 - 3:25 GeoSTAC: GEOSpatial Tools and ACess (Patrick Havens, Dow AgroSciences LLC) 3:25 - 3:30 Wrap-Up 

# Agenda of the June 12, 2007 Exposure Modeling Public Meeting 1 st Floor South Conference RoomPotomac Yard One 2777 Crystal Dr. Arlington, VA 22202 

## Morning Session 9:00 - 9:30 Welcome, introductions, and brief updates 9:30 - 10:00 Model Review and Scenario Development for Urban Pesticide Runoff Model (Scott Jackson, CLA; Mark Cheplick, Amy Ritter and Marty Williams, WEI) 10:00 - 10:30 Urban Models: Concepts, Questions and Opportunities (Tharacad Ramanarayanan, Bayer; Paul Hendley, Syngenta) 10:30 - 10:45 Break 10:45 - 11:15 Examination of Non-Agricultural Pesticide Use by means of GIS Coverages (Roy W. Meyer and Curtis Brown, New Jersey Department of Environmental Protection) 11:15 - 11:45 A Comparison of PRZM, RZWQM, AND TURFPQ for Modeling Turf Pesticides (Qingli Ma and Stuart Cohen, Environmental & Turf Services, Inc.) 11:45 - 1:00 Lunch Break 

## Afternoon Session 1:00 - 1:30 Uncalibrated Rainfall-Runoff Models (Phillip Zarriello, USGS/WRD) 1:30 - 2:00 Methods for Estimating Spatial Distributions of Turf (Michelle Thawley, USEPA/EFED) 2:00 - 2:15 Break 2:15 - 2:45 National PCA Assessment for Turf (Gerco Hoogeweg, Raghu Vamshi and Marty Williams, Waterborne Environmental, Inc.) 2:45 - 3:30 Wrap up 

# Agenda of the January 24, 2006 Exposure Modeling Public Meeting Room 1126 Crystal Mall 2 1801 S. Bell St. Arlington, VA 22202 1 . Welcome and Introductions 2. Old Action Items 3. Brief Updates ( 9:00 - 9:15 ) PRZM3.12.2 Evaluation (J. Hetrick) EFED's Modeling Scenarios (M. Corbin) Terrestrial Field Dissipation (M. Corbin) Spray Drift Update (N. Birchfield) 4. Major Topics 

## Morning Session 9:15 - 10:00The FOCUS Version Control Process - (Russell Jones, Bayer CropScience) 10:00 - 10:45 Model Development and Version Control Using a Collaboration Environment (COLAB) - (Ken Rojas, USDA_NRCS, Great Plains Systems Research Unit) 10:45 - 11:00 Break 11:00 - 11:45 Version Control for Great Lakes Models on Unix Systems - (Russell Kreis, ORD-NHERL) 11:45 - 1:00 Lunch Break 

## Afternoon Session 1:00 - 1:45 EFED Quality Assurance Procedures for Tools Involving the Use of Environmental Data - (Lisa Eisenhauer, OPP-EFED) 1:45 - 2:30 Community Multiscale Air Quality (CMAQ) Model - Quality Assurance and Version Control - (Ken Schere and Shawn Roselle, Atmospheric Model Development Branch, NOAA/Atmospheric Sciences Modeling Division, EPA/ORD/NERL) 2:30 - 3:00 Evaluation of the AGDISP Ground Boom Spray Drift Model - (Al Barefoot, CropLife America) 3:00 Wrap-Up: Next Meeting (M. Corbin) 

# Agenda of the October 3, 2006 Exposure Modeling Public Meeting Room 4370/4380 Potomac Yard One 2777 Crystal Dr. Arlington, VA 22202 1 . Welcome and Introductions 2. Old Action Items 3. Brief Updates ( 9:00 - 9:30 ) 4. Major Topics 

## Morning Session 9:30 - 10:00 Herbicides for Submersed Plant Control - Understanding Aqueous Concentration/Exposure Time Relationship (Kurt Getsinger, USACE) 10:00 - 10:30 Assessing Exposure to Aquatic Plant Pesticides in EFED (RDavid Jones, OPP-EFED) 10:30 - 10:45 Break 10:45 - 11:15 Use of Visual PLUMES and EXAMS in the Development and Field Evaluation of Aquatic Herbicides (Scott Jackson, BASF) 11:15 - 11:45 A 2-Dimensional Modeling Approach to Estimating Hold time and Setback Distances in Generalized Canal and Lake Settings (Lucas Paz, LFR Inc/ Syngenta) 11:45 - 1:00 Lunch Break 

## Afternoon Session 1:00 - 1:30 Dissipation of Aquatic Herbicides in Flowing Water (Lars Anderson, USDA-ARS) 1:30 - 1:45 Dispersion Modeling of Aquatic Herbicides (Amy Ritter and Marty Williams, Waterborne Environmental)1:45 - 1:55 Break 1:55 - 2:25 Exposure Modeling Approaches for Terrestrial and Aquatic Uses of Copper (Jim Hetrick, OPP-EFED) 2:25 - 2:55 Field and Modeling Investigations of Setback Distances for Aquatic Pest Management Products (TBD, Jim Knuteson) 2:55 - 3:00 Wrap-Up: Next Meeting 

# Agenda of the January 11, 2005 Exposure Modeling Public Meeting Room 1123 Crystal Mall 2 1801 Bell St. Arlington, VA 22202 1 . Welcome and Introductions (9:00 - 9:05) 2. Old Action Items (9:05 - 9:15) 3. Brief Updates (9:15 - 9:50) PRZM3.12.2 Evaluation (J. Hetrick) EXPRESS (R. Parker) Review of Public Comments on EFED's Modeling Scenarios (R. Parker) Spray Drift Update (N. Birchfield) Release of PGW Guidance Document (B. Behl) 4. Major Topics 

## Morning Session 9:50 - 10:50 PRZM Diary -- Silk purse or sow's ear? Comparing the predicted occurrence of atrazine in the vadose zone (PRZM3) with observed detections in shallow ground water across the United States (NAWQA) (J. Barbash, USGS) 10:50 - 11:10 Break 11:10 - 12:00 Comparison of LEACHM and PRZM Modeling to Field Data: Effect of Evaporation Simulation on Water Balance and Pesticide Movement (J.Triano, CDPR) 12:00 - 1:00 Lunch Break 

## Afternoon Session 1:00 - 1:50 Root Zone Water Quality Model (RZWQM): Brief Overview and Case Study (D. Wauchope, S. Cohen, Q. Ma) 1:50 - 2:05 Groundwater Modeling for Carbamate Cumulative Assessment (N. Thurman, D. Young) 2:05 - 2:20 Break 2:20 - 2:45 User-friendly CXTFIT2 Model to Estimate Setback Distances (T. Estes) 2:45 - 3:00 Wrap-Up: Next Meeting (R. Parker) 

# Agenda of the April 11, 2005 Exposure Modeling Public MeetingRoom 1123 Crystal Mall 2 1801 Bell St. Arlington, VA 22202 1 . Welcome and Introductions (9:00 - 9:05) 2. Old Action Items (9:05 - 9:15) 3. Brief Updates (9:15 - 9:45) PRZM3.12.2 Evaluation (J. Hetrick) EXPRESS (R. Parker) Carbamate Cumulative Assessment (N. Thurman) 4. Major Topics 

## Morning Session 9:45 - 10:15 Soil Fumigant Critical Input Parameter Selection for Air Dispersion Modeling, Ian van Wesenbeeck, Ph.D. - Dow AgroSciences 10:15 - 10:45 Fumigant Exposure Modeling System (FEMS): David Sullivan - Sullivan Consulting 10:45 - 11:00 Break 11:00 - 11:30 Probabilistic Exposure and Risk model for FUMigants (PERFUM): Rick Reiss, D.Sc. - Sciences International 11:30 - 12:00 Predicting Soil Fumigant Acute, Sub-chronic, and Chronic Air Concentrations Under Diverse Agronomic Practices: An overview of the SOFEA(c) System, Steve Cryer, Ph.D. - Dow AgroSciences 12:00 - 1:00 Lunch Break 

## Afternoon Session 1:00 - 1:30 Environmental and Agricultural Factors Controlling Pesticide Volatilization, Transport, and Deposition - Laura McConnell, Ph.D. USDA/ARS Beltsville, MD 1:30 - 1:45 EFED Spray Drift Modeling Activities: Norm Birchfield, Ph.D - OPP/EFED 1:45 - 2:05 Drift Reducing Technology Project: Norm Birchfield 2:05 - 2:20 Break 2:20 - 2:45 AgDrift/AgDisp Modeling Issues: Dave Valcore, Ph.D. - Dow AgroSciences 2:45 - 3:00 Wrap-Up: Next Meeting - R. Parker 

# Agenda of the July 21, 2005 Exposure Modeling Public Meeting Room 1126 Crystal Mall 2 1801 S. Bell St. Arlington, VA 22202 1 . Welcome and Introductions 2. Old Action Items (9:00 - 9:15) 3. Brief Updates (9:15 - 9:45)PRZM3.12.2 Evaluation (J. Hetrick) EXPRESS (R. Parker) EFED's Modeling Scenarios (M. Corbin) Spray Drift Update (N. Birchfield) Carbamate Cumulative (N. Thurman) 4. Major Topics 

## Morning Session 9:45 - 10:30 Coupled Watershed - Instream Sediment and Contaminant Transport and Fate Modeling System (Earl Hayter, EPA/ORD-NERL) 10:30 - 11:00 Factors Influencing Erosion in PRZM Modeling (Mark Corbin, EPA/OPP-EFED) 11:00 - 11:15 Break 11:15 - 12:00 Issues Associated with Estimating Slope Length Factor for GIS-based Sediment Erosion Modeling (Scott Jackson, BASF and Paul Hendley, Syngenta) 12:00 - 1:00 Lunch Break 

## Afternoon Session 1:00 - 1:30 Uncalibrated Modeling of Conservative Tracer and Pesticide Leaching to Ground Water using the Root Zone Water Quality Model (RZWQM) (Garey Fox, University of Mississippi) 1:30 - 2:00 Modeling Sediment Transport at Field and Watershed Scales (Carrie Graff, ARS-Beltsville) 2:00 - 2:15 Break 2:15 - 2:45 Multivariate Analysis of Paired Watershed Data to Evaluate Agricultural BMP Effects on Stream Water P (W. Dean Hively, USDA-ARS) 2:45 - 3:00 Wrap-Up: Next Meeting (M. Echeverria) 

# Agenda of the October 26, 2005 Exposure Modeling Public Meeting Room 1126 Crystal Mall 2 1801 S. Bell St. Arlington, VA 22202 1 . Welcome and Introductions 2. Old Action Items 3. Brief Updates (9:00 - 9:30) PRZM3.12.2 Evaluation (J. Hetrick) EFED's Modeling Scenarios (M. Corbin) Spray Drift Update (CropLife America/ Spray Drift Task Force) 4. Major Topics 

## Morning Session9:30 - 10:00 Applying Traditional Variance Component Methods For Quantifying and Predicting End-Points Under Spatial Variability (Bruce H. Stanley, Dupont Crop Protection) 10:00 - 10:30 GIS Tool for Associating Estuarine/Marine Habitat with Agricultural Pesticide Uses (Kris Garber and Tim Negley, Syracuse Research Corporation) 10:30 - 10:40 Break 10:40 - 11:10 National Geo-spatial Data Policy (Kevin Kirby, EPA/OEI) 11:10 - 11:40 The MARIA Spatial Water Quality Modeling Framework (James Ascough, USDA-ARS-NPA) 11:40 - 12:00 Utility of USGS Water Use Data on Drinking Water Exposure Assessment (T. S. Ramanarayanan, Bayer CropScience) 12:00 - 1:00 Lunch Break 

## Afternoon Session 1:00 - 1:30 Framework for Spatially Explicit Risk Assessments (Nelson Thurman and Mark Corbin, EPA/OPP) 1:30 - 1:50 PLUS: Geospatial Leaching Assessment Tool (Mark Cheplick, Waterborne Environmental) 1:50 - 2:00 Break 2:00 - 2:30 National Hydrography Dataset (NHDplus) (Cindy McKay, Horizon Systems Corporation) 2:30 - 3:00 National Pyrethroid Aquatic Exposure Analysis; Estimation of Drift and Erosion Potential at the Watershed Level (Christopher Holmes, Waterborne Environmental) 3:00 Wrap-Up: Next Meeting (M. Echeverria) 

# Agenda of the January 6, 2004 Exposure Modeling Public Meeting Date and Time: January 6, 2004 from 9 a.m. to 3 p.m. Office of Pesticide Programs Conference Room Crystal Mall #2 Room 1126 (Fishbowl) 1921 Jefferson Davis Hwy. Arlington, VA 22202 

## Welcome and Introductions 9:00 to 9:10 AM Old Action Items 9:10 to 9:30 AM Brief Updates 9:30 to 10:00 AM PRZM/EXAMS model (Larry Burns) PE4 (EFED's Shell) (Jim Lin) GW model (Betsy Behl) Regional PCA (Kevin Costello) Drinking Water Treatment Workshop (Jim Hetrick)Proposal of Soil Dissipation Meeting at ACS (Spring 2004) (Mark Corbin) 10:00 to 10:20 AM Break 

## Major Topics 10:20 to 11:00 AM Use of Foliar Dissipation Study for Exposure Purpose (R. David Jones) 11:00 to 11:40 AM Update on FOCUS Work Group on Degradation Kinetics General Findings (Russell Jones) 11:40 to 12:00 Noon Update on FOCUS Work Group on Degradation Kinetics Metabolites (Claude Beigel) 12 Noon to 1:00 PM Lunch Break 1:00 to 2:10 PM Spatial Approaches for Designing a Statistically Based Ecological Monitoring Program - Lessons Learned (Nelson Thurman, Paul Hendley) 2:10 to 2:50 PM A Degree-Day Concept for Estimating Degradation Time under Field Conditions (Scott Jackson) 

## Wrap-Up

2:50 to 3:00 PM 

# Agenda of the April 6, 2004 Exposure Modeling Public Meeting Date: April 6, 2004 from 9 a.m. to 3 p.m. Office of Pesticide Programs Conference Room Crystal Mall #2 Room 1126 (Fishbowl) 1921 Jefferson Davis Hwy. Arlington, VA 22202. 

## Welcome and Introductions Old Action Items 9:00 to 9:15 AM Updates 9:15 to 10:00 AM PRZM/EXAMS, EXPRESS (ORD/EFED) Standard Scenarios Discussion (Ronald Parker) GW Model (Betsy Behl) Drinking Water Treatment Workshop (Jim Hetrick) Terrestrial Field Dissipation Symposium (Mark Corbin) 10:00 to 10:15 AM Break 

## Major Topics 10:15 to 11:15 AM A Summary of the Fumigant Emission Modeling System (FEMS) (David Sullivan) 11:15 to 11:30 AM PRZM with New Subroutine of Adsorption/Desorption Kinetics (Wenlin Chen) 11:30 AM to Noon Overview of the SAP Meeting on the Level II Aquatic Model (Steven Bradbury) Noon to 1:00 PM Lunch Break1:00 to 2:30 PM Introduction and Demonstration of EFED's Pesticide Database (Mah Shamin and Larry Liu) 

## Wrap-Up 

# Cancellation Notice of the July 20, 2004 Exposure Modeling Public Meeting Greetings: Because one of the major topics scheduled for the July meeting has moved to the Fall (ground water discussion), we have decided to cancel the 7/20 meeting. I have reserved the large 11th floor conference room here in Crystal Mall 2, for Monday 9/27 and Monday 10/4. please let me know if there are major conflicts with either of these dates. We look forward to a productive meeting in the Fall! If you have questions or concerns, feel free to call me at 703-305-6128 Betsy Behl 

# Agenda of the October 4, 2004 Exposure Modeling Public Meeting Date: October 4, 2004, from 9 a.m. to 3 p.m. Office of Pesticide Programs Conference Room Crystal Mall #2 Room 1126 (Fishbowl) 1801 South Bell Street Arlington, VA 22202 

## Welcome and Introductions Old Action Items 9:00 to 9:15 AM Updates 9:15 to 10:00 AM PRZM/EXAMS model, EXPRESS (RD Jones, L. Burns) Review of Public Comments on EFED's Modeling Scenarios (RD Jones) Terrestrial Field Dissipation / New Technical Document (M. Corbin) Direct Application of Herbicides to Water Bodies (M. Corbin) Spray Drift Update (N. Birchfield) Cumulative Drinking Water Assessment - Method Review (N. Thurman) 10:00 to 10:10 AM Break 

## Major Topics 10:10 to 10:25 AM ILSI Risk Science Institute Project on CARES (B. Julien) 10:25 to 11:10 AM Overview of CARES with a Focus on Drinking Water Assessment (S. Jackson) 11:10 AM to Noon Ground Water Mapping Using Classification And Regression Tree Analysis: An EarthSat Approach (J. Copper, F. Smith) Noon to 1:00 PM Lunch Break 1:00 to 1:30 PMEFED Ground Water Modeling Development Effort (D. Young) 1:30 to 2:00 PM Evaluation of Vadose Zone Solute Transport Models (T. Nolan) 2:00 to 3:00 PM (by teleconferencing) Assessing the Vulnerability of Ground Water to Contamination - Recent Approaches and Future Prospects (J. Barbash) 

## Wrap-Up