On August 5, 2025 ADM Aéroports de Montréal determined that the aircraft parking construction project is not likely to cause significant adverse environmental effects by applying the mitigation measures provided for in the project.?? 

 

This decision is based on the following factors:?? 

• Mitigation measures that are technically and environmentally feasible (see below);?? 
• Community knowledge;?? 
• Knowledge and impacts on the rights of indigenous peoples.  

  

The following mitigation measures were considered for this determination:  

Management of invasive alien species (IAS) 

• Excavate soils containing invasive species and dispose of them in an authorized landfill.  
• Clean machinery before/after working in at-risk areas.  
• Use IAS-free seed and fill.  
• Inspect soils before re-use.  

Fauna/flora  

• Ensure that no species of special concern are present on the site at the start of work.  
• Inspect the site just prior to work commencing to ensure that there are no breeding birds or active nests present.?? 

Water quality  

• Comply with DFO (Department of Fisheries and Oceans) regulations for work near the creek.  
• Install sediment barriers and erosion control mats to prevent materials from being discharged into watercourses or stormwater systems.  
• Recover and treat water from sweep trucks.  
• Treat and recycle cleaning water from concrete trucks.  
• Check for the presence of fish and, if necessary, ensure their free movement. Mandate specialists to relocate them if required.  

Management of excavated materials and contaminated soils  

• Characterize the soil to be excavated beforehand.  
• If necessary, manage contaminated soils in compliance with applicable standards.  

 ??? Air quality  

• Water unpaved surfaces to avoid dust emissions caused by heavy equipment traffic.  
• Water/sweep/vacuum paved surfaces to avoid dust emissions caused by certain sawing, grinding and other operations.  
• Avoid idling engines and maintain the equipment.  
• Maintain rolling equipment in optimum operating condition.