An experienced team

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

Jean-François Raoult

Engineer, MBA, CEAPresident

A chemical engineer with an environmental concentration, a MBA and a Certified Environmental Auditor, Mr. Raoult has more than 18 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.A, CESAVice-president

Holding a diploma in civil engineering from the Mines de Nancy (France) in geoengineering, a master degree in mineral engineering from the Ecole Polytechnique de Montréal and a Certified Environmental Site Auditor, 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. Finally, Mr. Welfringer is an Expert under article 31.65 of the Environmental Quality Act.

Jean-Paul Ballot

Engineer, Registered Occupational Hygienist (ROH)Vice-President / Health and Safety Director

He is a Registered Occupational 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, CESA

More than 40 years experience in land characterization and rehabilitation, environmental auditing, hazardous materials management, environmental databases, environmental management, communications and training. Mr. St-Germain is also a Certified Environmental Site Auditor and an Expert under article 31.65 of the Environmental Quality Act.


Engineer and biologist

More than 40 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.