• It is the contractor's responsibility to identify and locate underground infrastructure before proceeding with any excavation work.
• Keep the site and adjacent areas clean. Clean up the site as work progresses to prevent the accumulation of dust, dirt, debris, materials and other waste.
• Implement a spill prevention and response plan and clearly identify the people and organizations responsible to contact and the procedure to follow in the event of an environmental emergency.
• A spill emergency kit must be present at all times on the site of the work. Any spills must be quickly controlled and contaminated equipment must be managed according to current standards. Recover any contamination, whether it is the spilled product, the soil or water affected by this contamination and dispose of it according to the regulations in force. Notify the airport official and TC Environmental Officer without delay. The characterization work, rehabilitation work and the rehabilitation report must be done by an environmental consulting firm.
• Any spill with environmental consequences must be reported to Environment and Climate Change Canada's (ECCC) emergency services (1-866-283-2333) and to the emergency service of the Ministère de l'Environnement et de la Lutte contre les changements climatiques, de la Faune et des Parcs (MELCCFP) (1-866-694-5454).
• Ensure that equipment and machinery are in good working order and free of oil leaks.
• Maintain, clean and refuel equipment and vehicles in the designated areas, on a watertight surface, at a distance of at least 30 metres from watercourses and 15 metres from drainage ditches.
• Install a sediment or protective barrier to prevent sediments/spills or other inputs into the natural environment bordering the NH-237 sector.
• Limit machinery traffic to the road footprint to minimize impacts on adjacent natural vegetation.
• Ensure that work equipment and machinery are clean and free of invasive species upon arrival at the site and maintain them in this condition afterwards and at the end of the work.
• Comply with laws and regulations related to the presence of migratory birds, including, but not limited to, the Species at Risk Act, the Migratory Birds Convention Act, 1994 and the Migratory Birds Regulations. Some measures to minimize impacts on birds include:
• Limit encroachment into the natural environment as much as possible.
• Avoid disturbing or destroying any migratory bird nest.
• Avoid approaching or disturbing any bird or bird nest if they are observed during work
• If a nest containing migratory bird eggs or nestlings is discovered near or within the work zone, stop all noisy activities in the vicinity of the nesting site, protect the nest(s) with a protection zone. Contact the departmental representative (ECCC's Canadian Wildlife Service (CWS) immediately to ensure that the correct action is taken).
• The tanks to be removed are registered with Environment Canada and subject to the Storage Tank Systems for Petroleum Products and Allied Petroleum Products Regulations (TOPSPR). The permanent decommissioning and removal of a storage tank system subject to the NOTOPP must comply with sections 44 and 45 of these regulations. Permanent decommissioning and removal of tanks must be carried out by a licensed person, for example, a contractor who has obtained the appropriate licence from the Régie du bâtiment du Québec (RBQ).
• Decommissioning must be carried out in a manner that prevents any adverse effects on the environment.
• The owner must record the decommissioning information and notify Environment Canada of the removal and decommissioning of these tanks.
• Please provide proof of supervision of tank removal by an RBQ-licensed contractor, so that TC can document the compliance of the permanent decommissioning of petroleum equipment.
• Dismantled tanks and other hazardous products must be placed in a waterproof tank or on a canvas of sufficient size to collect any leaks or placed on the truck for transport.
• The characterization of the soils (left in place and excavated) must be done by a representative of the environmental consultant, for the applicable federal and provincial criteria for the typical parameters of petroleum hydrocarbons.
• Before backfilling the excavation, please wait for confirmation from the environmental consultant that the quality of the soil left in place meets the applicable criteria, or if over-excavation work is required. 
• Store soils temporarily in containers or stack on a waterproof membrane (and also cover with a membrane) to prevent wind erosion and runoff leaching. The membrane protecting the floors will have to be weighted.
• Store excavated soil in a manner that prevents material loss. These soils must then be managed according to their level of contamination in accordance with the regulations in force.  These soils must not be reused on the site.
• All imported backfill material must be clean, i.e., below criterion A of the MELCCFP's Intervention Guide, Soil Protection and Rehabilitation of Contaminated Land (hereinafter referred to as "The Guide"). A certificate of chemical analysis must be provided to prove the quality and origin of this backfill.
• The environmental consultant must ensure that the transportation of excavated soil off-site is carried out in accordance with the Regulation respecting the traceability of excavated contaminated soil. This applies to all contaminated soils excavated from human activity from range A-B, regardless of the volume of soil.
• Cover dump trucks when transporting fine materials.

Transport Canada is satisfied that that the carrying out of the project is not likely to cause significant adverse environmental effects.

Therefore, Transport Canada may carry out the project, exercise any power, perform any duty or function, or provide financial assistance to enable the project to be carried out in whole or in part.