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John Hanzas President / Agrochemical Fate & Exposure Service Leader / Senior Geoscientist

Hanzas John

John joined Stone in 1994 as a staff geoscientist and quickly moved up the ranks, eagerly working on every type of project Stone conducted. He has been pivotal to the growth and success of Stone over the last two decades. John brings strong technical and business perspectives to his new role, with a degree in business management and over two decades of experience performing field studies.

For the past decade, John has led Stone’s Agrochemical Fate and Exposure group while serving on the senior management team. Within this role, John oversees a wide variety of regulatory, scientific, and technical projects focused on providing reliable and defensible data and analyses to assist agrochemical companies in evaluating the fate of their crop protection products in the environment.