The Arnold J. Lehman Award is presented to recognize an individual who has made a major contribution to risk assessment and/or the regulation of chemical agents, including pharmaceuticals. The contribution may have resulted from the application of sound scientific principles to regulation and/or from research activities that have significantly influenced the regulatory process. Two letters of nomination from full members of the Society must be submitted. Both letters should provide documentation and description of the major contributions of the nominee to risk assessment or regulation of chemical agents. Preference will be given to nominees who have not received another SOT Award within the last two years. Please visit the award's website or contact the Society of Toxicology for more information.