Dr. David L. Mitchell is an authority on the numerical modeling of geophysical and atmospheric data with a Doctorate in Meteorology from Purdue University. Dr. Mitchell has over 28 years of technical modeling experience in industry and consulting. His business experience includes various research, project management and technical consulting positions with Conoco, Getty Oil Company, Texaco, Tenneco, British Petroleum, Leviathan Gas Pipeline LLP and IBM Corporation. With extensive knowledge of Forensic Meteorology he has published his research results on the numerical modeling of atmospheric stability and convection. Dr. Mitchell is an expert in the field of Air Pollution Meteorology with over 28 years of experience with the mathematical modeling of wave propagation in elastic media, atmospheric fluid dynamics and air dispersion modeling. He has extensive knowledge of air pollution modeling software and air quality modeling techniques approved by the US Environmental Protection Agency.