• Groupe Dessau Inc. - Laval, Amos, Anjou, Bécancour, Boucherville, Chicoutimi, Gatineau, Joliette, Lévis, Longueuil, Matane, Montréal, Ottawa, Québec City, Rimouski, Rivière-du-Loup, Rouyn-Noranda, Saint-Félicien, Saint-Jean-sur-Richelieu, Saint-Jérôme, Sainte-Anne-des-Monts, Salaberry-de-Valleyfield, Sorel-Tracy, Trois-Rivières and Val-d’Or

Materials and soils engineering; Engineering of small and large dams; Hydropower engineering; Power distribution; Transmission lines; Energy production; Telecommunications; Telecommunications structure and sites development; Automation control; Systems and technologies; Civil engineering of building, bridges and other structures; Mechanical and electrical engineering; Estimation; Construction; Project management; Energy efficiency; Geomatic; Environment and sustainable development; Environmental assessment; Site restoration; Environmental risk analysis; Geophysics; Hydrogeology; Municipal services; Urban development; Road engineering; Transportation engineering (highways, railways, airports, ports and bridges); Traffic engineering; Industrial engineering and process.

• Dessau Inc. and Dessau-Soprin Inc. - Laval, Amos, Anjou, Bécancour, Boucherville, Chicoutimi, Gatineau, Joliette, Lévis, Longueuil, Montréal, Ottawa, Québec City, Rimouski, Rivière-du-Loup, Rouyn-Noranda, Saint-Félicien, Saint-Jean-sur-Richelieu, Saint-Jérôme, Sainte-Anne-des-Monts, Salaberry-de-Valleyfield, Sorel-Tracy, Trois-Rivières and Val-d’Or

Engineering of small and large dams; Hydropower engineering; Power distribution; Transmission lines; Energy production; Telecommunications; Telecommunications structure and sites development; Automation control; Systems and technologies; Civil engineering of building, bridges and other structures; Mechanical and electrical engineering; Estimation; Construction; Project management; Energy efficiency; Geomatics; Environment and sustainable development; Environmental assessment; Site restoration; Environmental risk analysis; Geophysics; Hydrogeology; Municipal services; Urban development; Road engineering; Transportation engineering (highways, railways, airports, ports and bridges); Traffic engineering; Industrial engineering and processes.

• Dessau International Inc. - Laval, Gatineau, Longueuil, Montréal and Québec City

Engineering of small and large dams; Hydropower engineering; Power distribution; Transmission lines; Energy production; Telecommunications; Telecommunications structure and sites development; Automation control; Systems and technologies; Civil engineering of building, bridges and other structures; Mechanical and electrical engineering; Estimation; Construction; Project management; Energy efficiency; Geomatics; Environment and sustainable development; Environmental assessment; Site restoration; Environmental risk analysis; Geophysics; Hydrogeology; Municipal services; Urban development; Road engineering; Transportation engineering (highways, railways, airports, ports and bridges); Traffic engineering; Industrial engineering and processes.

• Gauthier et Guillemette Consultants Inc. - Laval, Montréal and Québec City

Engineering of small and large dams; Hydropower engineering; Power distribution; Transmission lines; Energy production; Telecommunications; Telecommunications structure and sites development; Automation control; Systems and technologies; Civil engineering of building, bridges and other structures; Mechanical and electrical engineering; Estimation; Construction; Project management; Energy efficiency; Geomatics; Environment and sustainable development; Environmental assessment; Site restoration; Environmental risk analysis; Geophysics; Hydrogeology; Municipal services; Urban development; Road engineering; Transportation engineering (highways, railways, airports, ports and bridges); Traffic engineering; Industrial engineering and processes.

• Soprin ADS Inc. - Laval, Lévis, Longueuil, Montréal, Québec City, Saint-Jérôme, Sorel-Tracy, Rouyn-Noranda and Val-d’Or

Engineering of small and large dams; Hydropower engineering; Power distribution; Transmission lines; Energy production; Telecommunications; Telecommunications structure and sites development; Automation control; Systems and technologies; Civil engineering of building, bridges and other structures; Mechanical and electrical engineering; Estimation; Construction; Project management; Energy efficiency; Geomatics; Environment and sustainable development; Environmental assessment; Site restoration; Environmental risk analysis; Geophysics; Hydrogeology; Municipal services; Urban development; Road engineering; Transportation engineering (highways, railways, airports, ports and bridges); Traffic engineering; Industrial engineering and processes.

• Soprin experts-conseils Inc. - Laval, Lévis, Longueuil, Montréal, Québec City, Rouyn-Noranda, Saint-Jérôme, Sorel-Tracy and Val-d’Or

Engineering of small and large dams; Hydropower engineering; Power distribution; Transmission lines; Energy production; Telecommunications; Telecommunications structure and sites development; Automation control; Systems and technologies; Civil engineering of building, bridges and other structures; Mechanical and electrical engineering; Estimation; Construction; Project management; Energy efficiency; Geomatics; Environment and sustainable development; Environmental assessment; Site restoration; Environmental risk analysis; Geophysics; Hydrogeology; Municipal services; Urban development; Road engineering; Transportation engineering (highways, railways, airports, ports and bridges); Traffic engineering; Industrial engineering and processes.

• Realis Construction Inc. - Laval, Gatineau, Lévis, Longueuil, Montréal, Ottawa, Québec City, Rouyn-Noranda, Sorel-Tracy and Val-d’Or

Engineering services for the construction sector; Project management; Planning; Cost control; Estimation and Turnkey projects.

• Dessau Environnement Inc. - Laval, Anjou, Gatineau, Lévis, Longueuil, Montréal, Québec City, Rouyn-Noranda, Sorel-Tracy and Val-d’Or

Environmental assessments; Site restoration; Environmental risk analysis; Design and specifications; Construction and supervision.

• Landry, Gauthier et associés Inc. – Gatineau

Engineering services and civil mechanical and electrical engineering of building.

• Dessau Télécommunications Inc. - Laval, Gatineau, Lévis, Longueuil, Montréal, Québec City, Rouyn-Noranda, Sorel-Tracy and Val-d’Or

Engineering services for the energy and telecommunications sectors.

• Dessau / ADL Inc. - Matane, Rimouski and Sainte-Anne-des-Monts

Civil engineering of building, bridges and other structures; Mechanical and electrical engineering; Power distribution; Telecommunications; Estimation; Construction; Project management; Geomatics; Environment; Municipal services; Urban development; Road engineering; Transportation engineering (highways, railways, airports, ports and bridges); Traffic engineering.

• Dessau Ontario Inc. - Ottawa

Engineering of small and large dams; Hydropower engineering; Power distribution; Transmission lines; Energy production; Telecommunications; Telecommunications structures and sites developments; Systems and technologies; Civil engineering of building, bridges and other structures; Mechanical and electrical engineering; Estimation; Construction; Project management; Energy efficiency; Geomatics; Environment and sustainable Development; Environmental assessment; Site restoration; Environmental risk analysis; Geophysics; Hydrogeology; Municipal services; Urban development; Road engineering; Transportation engineering (highways, railways, airports, ports and bridges); Traffic engineering; Industrial engineering and process.

• Experts-Conseils Hydrogéo-Sol Inc. - Chicoutimi

Geophysics; Hydrogeology; Environment and Sustainable development; Environmental assessment; Site restoration; Environmental risk analysis.

• Consultants VFP Inc. - Trois-Rivières, Bécancour, Québec City

Design and professional services in civil, mechanical, electrical and instrumentation engineering, telecommunications including civil engineering of building, sanitary and municipal engineering, bridge and highway engineering, building and industrial mechanical engineering, as well as electrical engineering, industrial process, maritime engineering and engineering related to airports, distribution substations and distribution systems, waste water and potable water treatment and their systems, construction project management.

• Groupe-Conseil Enviram (1986) Inc. – Québec City

Consulting services in environment, landscape architecture, urban planning and work supervision.

• LVM-Technisol Inc. - Laval, Anjou, Boucherville, Dorval, Fasset, Gatineau, Joliette, Lévis, Longueuil, Ottawa, Québec City, Rivière-du-Loup, Rimouski, Rouyn-Noranda, Saint-Georges, Saint-Jérôme, Sainte-Thérèse, Salaberry-de-Valleyfield, Sept-Îles and Shawinigan

Materials and soils engineering; Corrosion-Engineering; Geotechnical; Geology; Hydrogeology; Road management and mechanics; Road engineering; Research and expertise; Quality control; Environment; Roofing and waterproofing; Manufacturing and work supervision; Quality management systems consulting services and training, Mass metrology calibration service. 

• Fondatec Inc. - Laval, Longueuil, Montréal, Rouyn-Noranda and Saint-Jérôme

Materials and soils engineering; Corrosion-Engineering; Geotechnics; Geology; Hydrogeology; Road management and mechanics; Road engineering; Research and expertise; Quality control; Environment; Roofing and waterproofing; Manufacturing and work supervision; Quality management systems consulting services and training.

• Laboratoire d’inspection et d’essai du Saint-Laurent - Salaberry-de-Valleyfield

Materials and soils engineering; Corrosion-Engineering; Geotechnics; Geology; Hydrogeology; Road management and mechanics; Road engineering; Research and expertise; Quality control; Environment; Roofing and waterproofing; Manufacturing and work supervision; Quality management systems consulting services and training.

• Laboratoire de matériaux de Québec (1987) inc. - Québec City, Shawinigan and Rivière-du-Loup

Materials and soils engineering; Geotechnical; Geology; Hydrogeology; Road management and mechanics; Road engineering; Research and expertise; Quality control; Environment; Roofing and waterproofing; Manufacturing and work supervision; Quality management systems consulting services and training.

• CPI Corrosion Ltd - Laval

Corrosion-Engineering; Corrosion laboratory tests ; Expertise and investigation ; Installation of cathodic protection.

• Cogemat Inc. - Sainte-Thérèse, Joliette, Saint-Georges and Sept-Îles

Materials and soils engineering; Corrosion-Engineering; Geotechnical; Geology; Hydrogeology; Road management and mechanics; Road engineering; Research and expertise; Quality control; Environment; Roofing and waterproofing; Manufacturing and work supervision; Quality management systems consulting services and training.

• SIMO Management Inc. - Laval

Maintenance engineering services as well as operational services and management of waterworks systems and of water treatment for potable water and wastewater.