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Regulatory Team

AMVAC has developed a world class Regulatory Affairs Team with a great deal of experience in global regulatory management. They are responsible for registering and defending the company’s products at the U.S. EPA and other regulatory bodies worldwide. The Regulatory Team develops and implements registration strategies to ensure that the Company’s products are in compliance with U.S. EPA, state, and international regulations as well as registering new active ingredients. The Regulatory Team also manages a series of activities including toxicology and environmental testing, and risk analysis as part of the product defense and development portfolios.

Anne Turnbough, Ph.D.
Vice President of Regulatory Affairs
Anne has nearly two decades of experience in managing regulatory compliance for a broad range of pesticides, including both chemicals and biologicals, in over 60 countries. Prior to joining AMVAC, she served as Global Director of Compliance & Regulatory Affairs for Oro Agri, Director of Regulatory Affairs for Control Solutions, Inc., and Global Regulatory Manager for Novozymes Biologicals Ltd. Anne holds both Masters and Doctorate degrees in Inorganic Chemistry from the University of Missouri in St. Louis, and both a Bachelor of Science degree in Applied Biochemical Sciences and a Diploma in Industrial Business Management from the University of Ulster, Northern Ireland. Over the course of her career, Anne has established an excellent working relationship with U.S. EPA, successfully obtained and defended numerous new product and use registrations, and built processes and teams to ensure the highest level of compliance globally.

Jeannie Hemiller
Regulatory Task Forces & Special Projects Director
Jeannie S. Hemiller began her regulatory career with AMVAC (1989-1994) in Los Angeles, CA. Subsequently she was with United Agri Products (UAP) as Director of Registrations and Regulatory Affairs (1994-2003) in Greeley, CO; Vice President of Registrations & Regulatory Affairs with Nufarm Americas, Inc. (2003-2008) in Chicago, IL; Senior Vice President and Equity Partner with Top Choice LLC (2009-2011) in Maryville, TN. She re-joined AMVAC in 2011. Jeannie graduated magna cum laude with a Bachelors of Science degree in Industrial Engineering from East Carolina University and pursued additional graduate level business education in the MBA programs at USC & Northwestern. She has a great deal of regulatory affairs management experience in the US and around the world.  She is the current Chair of the Metam Task Force. 

André Dykstra
Director of Registrations EMEA & APAC
André Dykstra is responsible for the registration of AMVAC’s products in Europe, Middle-East, Africa & Asia-Pacific. Prior to joining AMVAC in 2013, André spent the last 26 years working for Chemtura and its predecessor companies. Starting as a regulatory specialist in Duphar, he rose to positions of increasing responsibility in regulatory affairs and was Chemtura’s global registration manager for agrochemicals, managing a team of 24 registration specialists. André received his doctor’s degree in Biology (comparable to PhD) from the University of Nijmegen, The Netherlands.

Julie Porter
Director of Registrations for U.S. and Canada
Julie Porter is responsible for the implementation of U.S. and Canadian product registration strategies and ensures that the Company’s products are in compliance with PMRA, U.S. EPA, and state regulations. AMVAC’s regulatory product managers and registration specialists report to Julie. She has worked at AMVAC since 2002 and has successfully taken on increasing responsibility in the Regulatory Affairs department. Julie received her Bachelors of Science degree in Business Administration from California Polytechnic State University, San Luis Obispo.

Ann Jonynas
Director of Toxicology
As Director of Toxicology, Ms. Jonynas manages a series of activities including toxicology testing and toxicology development strategies, risk analysis and human exposure/biomontoring studies. Prior to joining AMVAC, she was employed for 18 years by ICI companies in the United States and England in similar roles. Ms. Jonynas was awarded Diplomat of Royal College of Pathologist in Toxicology and received her M.Sc. in Toxicology in Birmingham, England. She received her Honors in Pharmacology/Pathology from Ewell College, London.

Dick Freedlander, Ph.D.
Director of Environmental Science
Dr. Freedlander manages a series of activities including residue chemistry, metabolism, environmental fate, ecotoxicology and associated risk assessments. Prior to joining AMVAC, he developed the contract laboratory JRF America. He has also served as the R&D Laboratory Director for Cerexagri and in his earlier employment with ICI Americas, he was responsible for product formulation development. Dr. Freedlander received his Bachelors of Science degree from the University of Miami and his doctorate degree from the University of South Carolina.