Pesticide Registration and Evaluation Committee (PREC)
Meeting Minutes

2024

2023

2022

2021

Presentations are available to the public upon request. If you would like to request any documents, please submit a request at our Public Records Portal (NextRequest).

Archives of earlier meetings

The following documents are available to the public upon request. If you would like to request any documents, please submit a request at our Public Records Portal (NextRequest).

2020

2019

November 15, 2019, PDF
July 19, 2019, PDF
May 17, 2019, PDF
March 15, 2019, PDF
January 18, 2019, PDF

2018

November 16, 2018, PDF
September 21, 2018, PDF
July 20, 2018, PDF
March 16, 2018, PDF
February 16, 2018, PDF

2017

September 15, 2017
- California's Toxic Air Contaminant Program for Pesticides, Randy Segawa, Department of Pesticide Regulation
- Draft Evaluation of Chlorpyrifos as a Toxic Air Contaminant, Shelley Duteaux, Department of Pesticide Regulation
- Directive for Interim Mitigation Measures to Address Health Risks from Chlorpyrifos, Randy Segawa, Department of Pesticide Regulation
August 18, 2017
- Ambient Air Monitoring Results: 2010-2016, Edgar Vidrio, Department of Pesticide Regulation
- Current Air Monitoring Network Update, Pam Wofford, Department of Pesticide Regulation
- Surface Water Mitigation Measures for Fipronil in Urban Runoff, Nan Singhasemanon and Carlos Gutierrez, Department of Pesticide Regulation
July 21, 2017
- Proposition 65 Chemical Listings and Safe Harbor Level Development: Glyphosate, Martha Sandy and Carol Monahan Cummings, Office of Environmental Health Hazard Assessment
- Metolachlor/S-Metolachlor Update, Sheryl Gill, Department of Pesticide Regulation
- Neonicotinoid Update, Denise Alder, Department of Pesticide Regulation
March 17, 2017
- Pesticide Contamination and Prevention Act, Detections of Metolachlor and S-Metolachlor Degradates, Sheryl Gill, Department of Pesticide Regulation
- U.S. Environmental Protection Agency Update, Patti TenBrook, U.S. Environmental Protection Agency
- Use of Nationwide Ground Water Monitoring Data to Revise Leacher/Non-Leacher List, John Troiano, Department of Pesticide Regulation

January 20, 2017
- Strategy to Optimize Resource Management of Storm Water (STORMS), Noelle Patterson, State Water Resources Control Board
- Copper Antifouling Paints, Carlos Gutierrez and Nan Singhasemanon, Department of Pesticide Regulation

2016

November 18, 2016
- Risk Mitigation for 1,3-Dichloropropene, Randy Segawa, Department of Pesticide Regulation
- 2015 Air Monitoring Network Results, Edgar Vidrio, Department of Pesticide Regulation
- Pesticide Air Monitoring Network, Pam Wofford, Department of Pesticide Regulation

August 19, 2016
- Risk Assessment on Fipronil; DPR's New Process, John Sanders, Department of Pesticide Regulation
  - Memorandum - Problem Formulation Summary for the Fipronil Risk Assessment
  - Problem Formulation/Scoping Summary Document Draft

July 15, 2016
- National Academy of Sciences' Review of California's Risk Assessment Process, Marylou Verder-Carlos, Department of Pesticide Regulation
  - Evaluation and Implementation of Comments/Recommendations from the National Academy of Sciences Report Entitled "Review of California's Risk Assessment Process for Pesticides"
- Healthy Schools Act Changes, Ashley Freeman, Department of Pesticide Regulation
- 2014 Pesticide Use Report, Eric Denemark, Department of Pesticide Regulation
May 20, 2016
- Air Monitoring Network Changes, Randy Segawa and Pam Wofford, Department of Pesticide Regulation
March 18, 2016
- Air Monitoring Network Changes, Randy Segawa and Pam Wofford, Department of Pesticide Regulation
- Community Perspective, Anne Katten, Californians for Pesticide Reform Steering Committee
January 15, 2016
- Cholinesterase Test Results Reporting and the Medical Supervision Program (AB 1963), Lucy Graham and Yvette Nonato, Department of Pesticide Regulation
- Update on Volatile Organic Compound Emissions, Pam Wofford, Department of Pesticide Regulation
- Registration Requirements for Products Made from Pesticide Impregnated Materials and Bearing Pesticide Claims, Jill Townzen, Department of Pesticide Regulation

2015

November 20, 2015
- Introduction to the Yamaha RMAX Remotely Piloted Helicopter and Review of U.S. Activities, Steve Markofski, Yamaha Unmanned Systems Division
- Unmanned Aerial Vehicle Regulatory Issues, Ken Everett, Department of Pesticide Regulation
- Updates to the Worker Protection Standards and Impacts on California, Leslie Crowl, Department of Pesticide Regulation
- Recent Changes to the Pesticide Contamination Prevention Act: Pesticide Degradates in Ground Water, Sheryl Gill, Department of Pesticide Regulation
July 17, 2015
- Research Authorization Regulations, Ann Hanger, Department of Pesticide Regulation
- Revisions to Pesticide Safety Information Series Leaflets, Kevin Solari, Department of Pesticide Regulation
- 2014 Air Monitoring Network Results, Atac Tuli, Department of Pesticide Regulation
- Community Fumigant Monitoring for the Toxic Air Contaminant Program, Pam Wofford, Department of Pesticide Regulation

May 15, 2015
- Product Compliance Overview,Stephanie Duncan, Department of Pesticide Regulation
- Update on Neonicotinoid Reevaluation, Denise Alder, Department of Pesticide Regulation
- Pesticide Registration Process, Richard Spas, Department of Pesticide Regulation
March 20, 2015
- CalEnviroScreen: A Tool For Evaluating California Communities, Laura August, Office of Environmental Health Hazard Assessment
- 2015 Rulemaking Calendar, Randy Segawa, Department of Pesticide Regulation
- Pesticide Illness Surveillance Program (2012 Report), Amberlyn Ferleman and Michel Oriel, Department of Pesticide Regulation
January 16, 2015
- Chloropicrin Mitigation Measures, En Español, Randy Segawa, Department of Pesticide Regulation

2014

September 19, 2014
- Volatile Organic Compounds Update, Pam Wofford, Department of Pesticide Regulation
- FIFRA 24(c) Special Local Needs, John Inouye, Department of Pesticide Regulation
- FIFRA 18 Emergency Exemptions, Margaret Reiff, Department of Pesticide Regulation
August 15, 2014
- Chlorpyrifos Update, Randy Segawa, Department of Pesticide Regulation
- Update on Closed Mixing Systems Proposal,Ken Everett, Department of Pesticide Regulation
- Partnering to Better Solutions in Protecting Endangered Species, Rich Marovich, Department of Pesticide Regulation
- Revision to Pesticide Product Evaluation for Impacts to Surface Waters, Improved Urban Evaluation, Yuzhou Luo, Department of Pesticide Regulation
July 18, 2014
- Sulfuryl Fluoride (Structural) Mitigation Efforts, Kevin Solari, Linda O'Connell, and Pam Wofford, Department of Pesticide Regulation
- Second Generation Anticoagulant Rodenticide Update, Ann Hanger, Department of Pesticide Regulation
- Reevaluation Conclusion of Certain Pyrethroid Pesticide Products, Carlos Gutierrez, Department of Pesticide Regulation
May 16, 2014
- Co-Occurrence Pesticide/Species Tool, Rich Breuer, State Water Resources Control Board
- Product Compliance Branch Update, Donna Marciano, Department of Pesticide Regulation
- Pesticide Registration Data Management System Project, Denise Alder, Department of Pesticide Regulation
March 21, 2014
- Asian Citrus Psyllid Eradication Program Update,Victoria Hornbaker, California Department of Food and Agriculture
- Pesticide Air Monitoring Network Update, Randy Segawa, Department of Pesticide Regulation
- 1,3-Dichloropropene Update, Randy Segawa, Department of Pesticide Regulation
January 17, 2014
- Volatile Organic Compound Update, Randy Segawa, Department of Pesticide Regulation
- Risk Assessment Prioritization Update,Jay Schreider, Department of Pesticide Regulation
- Pollinator Protection Labeling Initiative Update, Denise Alder, Department of Pesticide Regulation

2013

November 15, 2013
- Proposed Closed Mixing Systems, Ken Everett, Department of Pesticide Regulation
- 2012 Pesticide Residue Monitoring Report, ) Mike Papathakis, Department of Pesticide Regulation
- Pest Management Alliance and Research Grants, Ann Schaffner, Department of Pesticide Regulation
September 20, 2013
- Risk Assessment Prioritization Update, Jay Schreider, Department of Pesticide Regulation
- Air Monitoring Network Discussion, Randy Segawa, Department of Pesticide Regulation
August 16, 2013
- Air Monitoring Network Results for 2012, Pam Wofford, Department of Pesticide Regulation
- Pesticide Air Monitoring Network: Monitoring Plan Changes for 2014, Randy Segawa, Department of Pesticide Regulation
July 19, 2013
- Overview of Phase II Soil Fumigant Label Changes, Regina Sarracino, Department of Pesticide Regulation
- Conclusion of Sulfuryl Fluoride Reevaluation, Carlos Gutierrez, Department of Pesticide Regulation
- California Aeration Plan, Jim Shattuck, Department of Pesticide Regulation
- School IPM Program Update, Natalya Eagan, Department of Pesticide Regulation
March 15, 2013
- Second Generation Anticoagulant Rodenticide Update, Marylou Verder-Carlos, Department of Pesticide Regulation
- Environmental Justice Screening Tool Pilot Project, Deldi Reyes, U.S. Environmental Protection Agency Region 9
- Update on Chloropicrin Mitigation, Linda O'Connell, Department of Pesticide Regulation
January 18, 2013
- California Communities Environmental Health Screening Tool, Allan Hirsch, Office of Environmental Health Hazard Assessment
- Ground Water Protection Program, Murray Clayton, Department of Pesticide Regulation

2012

November 16, 2012
- Social Media, Paul Verke, Department of Pesticide Regulation
- A Guide for Pesticide Registrants, Stakeholder's Guidance Manual, Richard Spas, Department of Pesticide Regulation
- Volatile Organic Compound Emissions from Pesticides: Proposed Nonfumigant Regulations, Randy Segawa, Department of Pesticide Regulation
- Public Outreach on Pesticide Safety, Martha Elena Sánchez, Department of Pesticide Regulation
July 20, 2012
- Surface Water Regulations for Nonagricultural Pesticides, Mark Pepple, Department of Pesticide Regulation
- Update on Reevaluation of Neonicotinoids, Denise Alder, Department of Pesticide Regulation
- Air Monitoring Network Results for 2011, Edgar Vidrio, Department of Pesticide Regulation
May 18, 2012
- Volatile Organic Compound Nonfumigant Regulations, Randy Segawa, Department of Pesticide Regulation
- Proposed Approval of the Pesticide Volatile Organic Compound SIP, Frances Wicher, U.S. Environmental Protection Agency
- Spatial and Temporal Quantification of Pesticide Loadings to the Sacramento River, San Joaquin River, and Bay-Delta to Guide Risk Assessment for Sensitive Species, Gerco Hoogeweg, Debra Denton, Marty Williams, Rich Breuer, Waterborne Environmental, Inc.
- Pesticide Registration and Evaluation Committee, Brian R. Leahy, Department of Pesticide Regulation
March 16, 2012
- Methyl Bromide Off-Gassing from Chilean Fruit Treatment during Transport and Cold Storage: Investigation, Mitigation and Regulatory Plan, George Farnsworth, Department of Pesticide Regulation
- Management of California's Organics Waste and Pesticides, Brian Larimore, California Department of Resources Recycling and Recovery
- Current State of Anticoagulant Rodenticides in California, Stella McMillin, California Department of Fish and Wildlife
- Air Monitoring Network Update, Randy Segawa, Department of Pesticide Regulation

2011

November 18, 2011
- New CalAg Permits System, John Gless, California Agricultural Commissioners and Sealers Association
- Proposed Surface Water Protection Regulations, Mark Pepple, Department of Pesticide Regulation
- Update on Non-Fumigant Volatile Organic Compound Mitigation Proposals Randy Segawa, Department of Pesticide Regulation
September 16, 2011
- Methodology for Evaluation of Pesticides for Surface Water Protection, Sheryl Gill and Yuzhou Luo, Department of Pesticide Regulation
- Non-Fumigant Volatile Organic Compound Mitigation Proposals, Randy Segawa, Department of Pesticide Regulation
- Risk Assessment Status Update, Jay Schreider, Department of Pesticide Regulation
May 20, 2011
- California 2009 Urban Pesticide Use Pattern Study, Pat Willenbrock, Pyrethroid Working Group
- Status of Copper Antifoulant Reevaluation, Richard Spas, Department of Pesticide Regulation
March 18, 2011
- Status of Harmonization Efforts Between U.S. EPA's Office of Water and the Office of Pesticide Products, Patti TenBrook, U.S. Environmental Protection Agency
- Status of Neonicotinoid Reevaluation, Denise Alder, Department of Pesticide Regulation
January 21, 2011
- Kettleman City Investigation of Birth Defects and Community Exposures-Findings, David Siegel, Office of Environmental Health Hazard Assessment and Sumi Hoshiko, California Department of Public Health
- Hexazinone Found in Ground Water and DPR Response, Lisa Ross, Department of Pesticide Regulation
- Changes to Soil Fumigant Labels, Brandi Martin, Department of Pesticide Regulation
- Copper Antifoulant Reevaluation, Richard Spas and Nan Singhasemanon, Department of Pesticide Regulation

2010

November 9, 2010
- Nanomaterials and AB 289, Stan Phillippe, Department of Toxic Substances Control
- Volatile Organic Compound Emissions and Consumer Products, David Mallory, Air Resources Board
- Air Monitoring Network, Randy Segawa, Department of Pesticide Regulation
September 16, 2010
- Update on U.S. EPA Science Advisory Panel Meeting on Field Volatility, Martha Harnly, California Department of Public Health
- Update on Neonicotinoid Reevaluation, Denise Alder, Department of Pesticide Regulation
July 15, 2010
- Invasive Species Program, David Pegos, California Department of Food and Agriculture
- Update on the San Francisco Bay Area Pesticide Injunction and Order for Protection of Endangered Species, Polo Moreno, Department of Pesticide Regulation
- Update on U.S. EPA Activities: Inerts, Spray Drift Labeling, Office of Water Harmonization, and Revised Risk Assessment Procedures, Patti TenBrook, U.S. Environmental Protection Agency
May 20, 2010
- Proposed Mitigation Measures for MITC Generating Pesticides, Linda O‘Connell, Department of Pesticide Regulation
- Pesticide Air Monitoring Network, Randy Segawa, Department of Pesticide Regulation
- Final Pesticide Air Monitoring Network Plan, Rosemary Neal, Randy Segawa, and Pam Wofford, Department of Pesticide Regulation
March 18, 2010
- Emergency Exemptions from Registration, Andrew Yokoyama, Department of Pesticide Regulation
January 14, 2010
- Potential Impacts of Pesticide Use Injunctions on Pesticide Use and the Protection of Endangered Species, Polo Moreno, Department of Pesticide Regulation
- Update on U.S. EPA Activities: Field Volatility, Inerts and Spray Drift, Patti TenBrook, U.S. Environmental Protection Agency

2009

November 19, 2009
- Pesticides in Dust from Homes in an Agricultural Area, Martha Harnly, California Department of Public Health
- Pesticide Air Monitoring Network, Randy Segawa, Department of Pesticide Regulation
August 20, 2009
- Pesticide Air Monitoring Network, Randy Segawa, Department of Pesticide Regulation
July 16, 2009
- Pesticide Air Monitoring Network, Randy Segawa, Department of Pesticide Regulation
- Chloropicrin Workshop, Sheryl Beauvais, Terrell Barry, and Carolyn Lewis, Department of Pesticide Regulation
- Impact of U.S. EPA 's Decision on Field-Use Rodenticides, Victoria Hornbaker, California Department of Food and Agriculture and Terrell Salmon, University of California
May 15, 2009
- AB 1011 Workload Report, David Supkoff, Department of Pesticide Regulation
April 17, 2009
March 5, 2009
- Mendota Air Monitoring Project, Randy Segawa, Department of Pesticide Regulation
- Reevaluation Status, Denise Webster, Department of Pesticide Regulation
January 16, 2009
- Pyrethroid Residues in Urban Runoff, Donald Westin, University of California
- Status of Chlorpyrifos and Diazinon Reevaluations, Denise Webster, Department of Pesticide Regulation

2008

2007

November 16, 2007
September 21, 2007
July 20, 2007
- Investigation of Antifouling Paint Pollution, Nan Singhasemanon, Department of Pesticide Regulation
May 18, 2007
March 16, 2007
- Basics on Sanitary Treatment Works and Their Pesticide Concerns, Charles Weir, Tri-Technical Advisory Committee
- Policy Considerations and Methodologies for Establishing Water Quality Criteria for Pesticides, Joe Karkowski, Central Valley Regional Water Quality Control Board
January 19, 2007

2006

2005

2004

2003

November 21, 2003
September 19, 2003
May 16, 2003
March 21, 2003
January 17, 2003

2002

November 15, 2002
September 20, 2002
July 19, 2002
May 17, 2002

For content questions, contact:
Melissa Swanson
Phone: (916) 324-3522
E-mail: preccomments@cdpr.ca.gov

Pesticide Registration and Evaluation Committee (PREC) Meeting Minutes