Matthew Rousseau is a Senior Associate Engineer and NAPL Technical Specialist with GHD based in Windsor, Ontario, Canada. Since 2003, his work has focused on the preparation of LNAPL Conceptual Site Models (LCSMs), the design of LNAPL site investigation programs, LNAPL mobility/recoverability/stability assessments, natural source zone depletion (NSZD) evaluations, as well as the development of LNAPL remediation and management strategies with a focus on sustainable risk-based solutions. He co-founded GHD’s petroleum NAPL technical group and currently advises on NAPL projects globally. In this capacity, Matt regularly provides training related to LNAPL behaviour, site characterization and remediation both internally to GHD staff and externally to clients, regulators, and other practitioners. He has also been involved in the development of LNAPL technical guidance documents in the U.S., Canada, and Australia including contributions to the ITRC LNAPL Team and more recently as a member of the ITRC LNAPL Update Team. Matt has both B.A.Sc. (1997) and M.A.Sc. (2000) degrees in Environmental Engineering from the University of Windsor in Windsor, Ontario, Canada, and is a licensed Professional Engineer (P.Eng.) in the Province of Ontario.