In Situ Vertical Thermal Response Test

A closed loop borehole ground source heat pump system is being considered to meet a portion of the Terminal's heating and cooling demands. A test borehole is to be installed to investigate and measure the thermal properties of the ground surface and a deep depth. This project is to drill one test borehole 108-152 diameter to approximately 260m deep (850 ft). 

Latest update

January 03, 2023 - The Greater Toronto Airports Authority (GTAA) issued its Notice of Determination and the project is not likely to cause significant adverse environmental effects.



Greater Toronto Airports Authority (GTAA)
Environmental Services
3111 Convair Drive
Toronto, Ontario L5P 1B2

  • Location

    • Toronto Pearson International Airport (GTAA) (Ontario)
  • Nature of Activity

    • Airport and Airfields
  • Assessment Status

  • Start Date

  • Proponent

    Greater Toronto Airports Authority
  • Authorities

    • Greater Toronto Airports Authority
  • Assessment Type

    Project on federal lands
  • Reference Number


This map is for illustrative purposes. The markers represent the approximate locations based on available data. More than one marker may be identified for a given assessment.


Nearby assessments

...within 200 kilometres
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