David Bertrand is a Principal Hydrogeologist based in Ontario with more than 15 years of experience in environmental consulting. David has directed and managed various soil and groundwater investigation and remediation projects including: excavation of soils containing chlorinated solvents, mercury and petroleum hydrocarbons, self-sustaining treatment for active remediation (STAR) technology, multi-phase extraction, enhanced bioremediation of Dense Non-Aqueous Phase Liquids (DNAPLs) and phytoremediation.
David has specific experience in the oversight and management of large vapor intrusion investigations, community relations, and the design, installation, and monitoring of sub-slab depressurization systems at industrial, commercial, and residential properties. He his primary focus is vapor intrusion assessments, he conducted his first vapor intrusion investigation in 2001, and the development of legally defensible sample collection methods. He continues to develop and refine Geosyntec’s vapor intrusion sampling protocols and equipment, as well as providing training to other staff and organizations.