An experienced team

The HDS Environnement management team is composed of the following professionals:

Jean-François Raoult

Engineer, MBAPresident

A chemical engineer with an environmental concentration and an MBA, Mr. Raoult has more than 12 years of experience in the environmental field. He joined HDS Environnement in 2004 before becoming President in 2017. Mr. Raoult works primarily in the areas of contaminated site characterization and remediation, environmental management, waste and waste management, Modeling of atmospheric emissions and health and safety at work.

Bruno Welfringer

Engineer, M.Sc.AVice-president

He holds a diploma in civil engineering from the Mines de Nancy (France) in geoengineering, and a master degree in mineral engineering from the Ecole Polytechnique de Montréal, an environmental orientation. Mr Welfringer joined the team HDS Environnement in 2008 before becoming Vice President in 2017. He works in the fields of characterization and rehabilitation of contaminated land, environmental management, environmental compliance audits, Impacts on the environment and industrial hygiene and health and safety at work.

Jean-Paul Ballot

Engineer, Certified Industrial Hygienist (ROH)Vice-President / Health and Safety Director

He is a certified industrial hygienist (ROH) and holds a degree in chemical engineering with a specialization in environment and health and safety at work. Mr. Ballot joined HDS Environnement in 2009 before joining the position of vice-president and vice-president in 2017. Director of Health, Safety, Industrial Hygiene. He works mainly in industrial hygiene, qualitative and quantitative assessment of contamination, risk analysis and management of industrial waste and residual materials.

The HDS Environment management team is also supported by experienced professionals and technicians trained in various spheres of environment and health and safety: engineers, geologists, biologists, and others. The HDS Environnement team is also complemented by the following senior professionals:


M.Sc. Environment / Project Management

Environmental specialist with master degrees in project management and environment M. Desbiens is one of the founders of HDS Environnement. He has been involved for over thirty years in environmental projects in Quebec and abroad, including environmental compliance verification, characterization and rehabilitation of contaminated sites, development of environmental management systems, risk analysis, Impacts on the environment.


Engineer, MBA

More than 30 years experience in land characterization and rehabilitation, environmental auditing, hazardous materials management, environmental databases, environmental management, communications and training.


Engineer and biologist

More than 30 years of experience in the characterization and rehabilitation of contaminated sites, environmental auditing, industrial wastewater treatment, wetland identification and assessment and natural habitats, emergency planning and response.


Certified Industrial Hygienist (ROH)

More than 30 years experience in occupational health and safety and industrial hygiene (ambient air quality, thermal stress, noise, etc.), physical, chemical and biological risk assessment, management of hazardous materials (asbestos, Mercury, lead, beryllium, etc.), WHMIS, work programs (respiratory protection, confined spaces, etc.), training.