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. Candidates must be a member of the Society. They may be employed in academia, government, or industry. Items needed in the application are a letter of nomination from a full member of the Society; curriculum vitae of the nominee; and a seconding letter from a full member of the Society. Both letters should provide documentation and description of the major contributions of the nominee to risk assessment or regulation of chemical agents. CV listing is not adequate without discussion of impact and how the nominee meets the award criteria. Preference will be given to nominees who have not received another SOT Award, defined as those conferred by the SOT Awards Committee, excluding Supported and Student awards, within the last two years. Please visit the award's website or contact the Society of Toxicology for more information.