Dr. Stahl is currently a senior environmental scientist at the U.S. Environmental Protection Agency, specializing in environmental policy development and decision analysis. Her expertise includes air quality programs, integrated health and ecological analyses (including stakeholder participation), the construction and use of indicators in integrated analyses (including cumulative impact analysis), uncertainty in decision making, and making sustainability operable through good decision analytic principles. With A. Cimorelli, she is a co-developer of the Multi-criteria Integrated Resources Assessment (MIRA) open solution approach.Mr. Cimorelli is currently retired from the U.S. Environmental Protection Agency. He is an internationally recognized expert in near-field atmospheric dispersion modeling. During his 41 years of professional experience he served as a senior physical scientist and regional meteorologist at the U.S. Environmental Protection Agency with responsibilities that included, research and development in atmospheric dispersion modeling and other related analysis techniques. Mr. Cimorelli is one of the principal developers of the AERMOD modeling system. His expertise also included the development of Agency guidance related to all aspect of air dispersion modeling, as well as the review and conduct of regulatory air modeling studies and air risk assessments. Additional he has taught many undergraduate and graduate courses in advanced air quality modeling, environmental law and environmental engineering at both Drexel and Temple Universities. With Dr. Stahl, he is a co-developer of the Multi-criteria Integrated Resources Assessment (MIRA) open solution approach.