Dr. Kofi Asante-Duah presently serves as Chief Scientific Advisor to the DC Department of the Environment. In this capacity, he provides technical support/oversight to numerous real-life multi-pathway chemical/toxicological risk assessment projects – comprised of multimedia environmental investigations; human health risk assessments; ecological risk assessments; probabilistic risk assessments; evaluation of potential risks associated with the migration of toxic contaminant vapors into building structures; development of risk