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Air Quality - Corktown Station

← Return to Early Works: Corktown Station

Key Findings

  • There are existing exceedances of two contaminants, benzene and benzo(a)pyrene, produced by both industry and vehicular exhaust combustion within the city. High levels of vehicular exhaust contaminants, such as benzene and benzo(a)pyrene, are typical of a highly urbanized environment like the City of Toronto.
  • The following nine critical receptors* and 14 sensitive receptors** have been identified within the study area. These locations have the potential to be affected based on proximity to the project footprint and predominant wind direction.
    • Critical receptors: 341 King Street East (CR1), 162 Parliament Street (CR2), 80 Sackville Street (CR3), 19 Sackville Street (CR4), 50 Tank House Lane (CR5), 50 Gristmill Lane (CR6), 8 Distillery Lane (CR7), 2 Princess Street (CR8) and 246 The Esplanade (CR9).
    • Sensitive receptors: 39 Sherbourne Street (SR1), 320 Richmond Street (SR2), 75 Ontario Street (SR3), 318 King Street East (SR4), 46-48 Power Street (SR5), 393 King Street East (SR6), 115 Trinity Street (SR7), 28 Eastern Avenue (SR8), 70 Mill Street (SR9), 33 Mill Street (SR10), 33 Hahn Place (SR11), 125 Scadding Avenue (SR12), 222 The Esplanade (SR13) and 177 Front Street East (SR14).
  • There is potential for temporary increases in contaminants associated with early works activities and construction vehicle emissions. These increases will be minimized by implementing appropriate mitigation measures (see Potential Effects & Mitigation Measures for more details).

* A critical receptor is a building which houses vulnerable populations such as a retirement home, hospital, childcare centre, school, or similar institutional building.
** A sensitive receptor is a building in which a person resides on a permanent or semi- permanent basis, such as a house or an apartment.

Critical and Sensitive Receptors within the Corktown Station Air Quality Study Area

Critical and Sensitive Receptors within the Corktown Station Air Quality Study Area

Potential Effects & Mitigation Measures

Potential Effects:

  • Temporary increase in air pollution and odour (e.g., diesel combustion products such as NO2) as a result of construction vehicle emissions and increased traffic due to congestion associated with early works activities.
  • Temporary increase in dust, silica and airborne particulates resulting from site preparation, earth works, demolition activities, heavy equipment travel over unpaved surfaces and uncovered soil storage piles.
  • Potential release of contaminants due to disruption of contaminated soils.

Mitigation Measures:

  • Manage on-site construction vehicle activity to control emissions of odourous contaminants and diesel exhaust.
  • If disruption of contaminated soils is anticipated, ensure that contaminants are not released.
  • Develop an Air Quality Management Plan to ensure consistent attention to mitigation of dust and particulates, including silica, from the early works site, once early works activity means and methods have been confirmed.

Traffic congestion on the Gardiner Expressway contributing to air pollution

Traffic congestion on the Gardiner Expressway contributing to air pollution.
Source: AECOM, 2018.

← Return to Early Works: Corktown Station

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