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Contacts in the Office of Pesticide Programs, Pesticide Re-Evaluation Division

For More Information

PRD Chemical Assignments (xlsx) (33.15 KB)

The Pesticide Re-Evaluation Division (PRD) is responsible for the  registration review of conventional pesticides and implementation of the Agricultural Worker Protection Standard and Certified Pesticide Applicator regulations and grants.

On this page:
  • Immediate Office
  • Certification and Worker Protection Branch
  • Risk Management and Implementation Branch I (RMIB I)
  • Risk Management and Implementation Branch II (RMIB II)
  • Risk Management and Implementation Branch III (RMIB III)
  • Risk Management and Implementation Branch IV (RMIB IV)
  • Risk Management and Implementation Branch V (RMIB V)

Immediate Office

NameEmailArea of Responsibility
Anne Overstreetoverstreet.anne@epa.govDirector
Timothy (Tim) Kielykiely.timothy@epa.govDeputy Director
Melanie Biscoebiscoe.melanie@epa.govSenior Regulatory Advisor
Natalie Braybray.natalie@epa.govSenior Regulatory Advisor

Certification and Worker Protection Branch

Implements the Agricultural Worker Protection Standard and Certified Pesticide Applicator regulations and manages pesticide safety and training grants.

NameEmailArea of Responsibility
Vacant Branch Chief
Ryne Yargeryarger.ryne@epa.govTeam Leader

Risk Management and Implementation Branch I (RMIB I)

Manages the registration review of conventional pesticides cases including Chlorpyrifos, Diazinon, Acephate, Dimethoate, Neonicotinoids, Rodenticides, etc.

NameEmailArea of Responsibility
Dana Friedmanfriedman.dana@epa.govBranch Chief
Vacant Senior Regulatory Advisor
Vacant Team Leader
Melissa Grablegrable.melissa@epa.govTeam Leader

Risk Management and Implementation Branch II (RMIB II)

Manages the registration review of conventional pesticides cases including 1,3-D, Chlorothalonil, Fipronil, Methomyl, Methyl Bromide, Sulfuryl Fluoride, etc.

NameEmailArea of Responsibility
Kevin Costellocostello.kevin@epa.govBranch Chief
Nicole Zinnzinn.nicole@epa.govTeam Leader
Steven Petersonpeterson.stevenr@epa.govTeam Leader
Vacant Senior Regulatory Advisor

Risk Management and Implementation Branch III (RMIB III)

Manages the registration review of conventional pesticides cases including Atrazine, Carbaryl, DDVP, Ethoprop, Malathion, Mancozeb, etc.

NameEmailArea of Responsibility
Kelly Shermansherman.kelly@epa.govBranch Chief
Jordan Pagepage.jordan@epa.govSenior Regulatory Advisor
Jaclyn Pynepyne.jaclyn@epa.govTeam Leader
Marianne Walterswalters.marianne@epa.govTeam Leader

Risk Management and Implementation Branch IV (RMIB IV)

Manages the registration review of conventional pesticides cases including Pronamide, Ethylene Oxide (ETO), DEET, Ferbam, Thiram, Ziram, etc.

NameEmailArea of Responsibility
Vacant Branch Chief
Julie Javierjavier.julie@epa.govTeam Leader
Maryam Muhammad muhammad.maryam@epa.govTeam Leader

Risk Management and Implementation Branch V (RMIB V)

Manages the registration review of conventional pesticides cases including Chloropicrin, Copper Pesticides, Dicamba, Glyphosate, Oxamyl, Pyrethrins, etc.

NameEmailArea of Responsibility
Cathryn Brittonbritton.cathryn@epa.govBranch Chief
Khue Nguyennguyen.khue@epa.govSenior Regulatory Advisor
Donna Kamareikamarei.donna@epa.govTeam Leader
Susan Bartowbartow.susan@epa.govTeam Leader

Pesticide Contacts

  • Pesticides HQ Organization
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  • Mailing to the Office of Pesticide Programs
Contact Us about Pesticide Contacts and Organizational Information
Contact Us about Pesticide Contacts and Organizational Information to ask a question, provide feedback, or report a problem.
Last updated on July 1, 2025
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