Some see Toronto Pearson as a wide expanse of runways, terminal buildings, and roadways. However, we also see the open space and creek valleys that make up approximately one-third of our airport’s land.
One of our biggest environmental programs is our Stormwater Management System. The airport lands are home to four end-of-pipe stormwater facilities and a series of stormwater retention ponds. The stormwater facilities normally represent the final control point prior to leaving airport property. Each also has the ability to divert the stormwater to the sanitary sewer system. This allows us to control the quantity and quality of stormwater leaving the airport.
The investment in this program is complemented by an extensive sampling program. The sampling program was developed in the late 1980s and continues to evolve based on environmental concerns and airport operations. Key locations, including each of the facilities, are sampled weekly to monitor the quality of stormwater leaving the airport property.