Mr. Sylvain Loranger is president and founder of MESIQ Inc. (1988). He has a Ph.D. in Community Health (Environmental Toxicology) from the faculty of medicine of University of Montréal (1994) and a Master degree in limnology from the Université du Québec à Montréal – UQAM (1982). He has over 35 years’ experience in human health risk assessment (HHRA) , ecological risk assessment (ERA) , environmental modeling and statistics. He is a recognized expert in risk assessment by federal, provincial and municipal agencies. He participated in several innovative projects in evaluation of radiological, chemical and microbiological risks. He has been a lecturer in these fields for over 30 years at the University of Montréal and at UQAM. Mr. Loranger acts currently as an independent expert for several private and public organizations in the context HHRA and ERA for site redevelopment, mine closure, and financial and real estate transactions on contaminated residential, commercial and industrial properties.