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Noise and Vibration - Corktown Station

← Return to Early Works: Corktown Station

Key Findings

Construction Noise

  • Noise sensitive receivers* are located within the study area.
  • Without mitigation, there is potential for daytime and nighttime noise criteria exceedances at 302, 322, 361 and 393 King Street East, 2 Berkeley Street, 33 Hahn Place and 5 Mill Street.
  • Construction noise will be minimized by implementing appropriate mitigation measures (see Potential Effects & Mitigation Measures).

* A sensitive receiver is a location that is sensitive to noise, where noise is assessed. These locations include living and sleeping quarters of dwellings and sleeping quarters of noise sensitive institutional/ commercial land uses.

Noise Screening for the Corktown Station Early Works Project Footprint

Noise Screening for the Corktown Station Early Works Project Footprint

Construction Vibration

  • The impact assessment employed a conservative approach, where construction equipment was assumed to operate at the edge of the project footprint, closest to sensitive receivers.
  • No heritage structures or other buildings are located within the vibration screening distance for building damage.
  • Vibration may be perceptible at the following buildings near the Corktown Station early works project footprint: 300, 302, 310, 318-330, 361 and 393 King Street East, 2, 26, 53 and 54 Berkeley Street, 240 and 251 Front Street East, 5 Mill Street, and 45 and 51 Parliament Street.
  • Vibration will be minimized by implementing appropriate mitigation measures (see Potential Effects & Mitigation Measures).

Vibration Screening for the Corktown Station Early Works Project Footprint

Vibration Screening for the Corktown Station Early Works Project Footprint

Potential Effects & Mitigations

Construction Noise

Potential Effects:

  • Without mitigation, there is potential for daytime and nighttime noise criteria exceedances at representative receptors 302, 322, 361 and 393 King Street East, 2 Berkeley Street, 33 Hahn Place and 5 Mill Street.

Mitigation Measures:

  • Use construction equipment compliant with noise level specifications in the Ministry of the Environment, Conservation and Parks’ NPC-115 and NPC-118 guidelines.
  • Keep equipment in good working order and operate with effective muffling devices.
  • Acoustic equipment enclosures for equipment such as compressors and generators.
  • Additional equipment silencers/mufflers.
  • Use of upgraded construction hoarding (considering requirements from CSA Z107.9 for noise barriers) between construction equipment and noise sensitive receivers.
  • Use of localized noise barriers for specific equipment and operations.
  • Minimize simultaneous operation of equipment where possible.
  • Implement a no idling policy on site (unless necessary for equipment operation).
  • Restrict construction hours where possible:
    • Perform construction during daytime hours where possible. If nighttime construction is necessary, activities with the highest noise levels should be conducted during daytime periods where possible.
    • If construction will occur outside of normal daytime hours, inform local residents of type of construction and expected duration outside of daytime hours prior to commencing work.
    • Consider operational duration limits for construction.
  • Limit the number of heavy trucks on site to the minimum required.
  • Stage construction vehicles away from noise sensitive locations where possible.
  • Coordinate with the Canadian Opera Company (at the Joey and Toby Tanenbaum Opera Centre at 227 Front Street East) and Canadian Stage (located on 26 Berkeley Street) to avoid disturbance during performances.
  • Undertake noise monitoring throughout the construction phase. Where noise criteria are exceeded, additional noise mitigation measures shall be implemented.
  • Develop a communications protocol for providing advance construction notices and addressing public complaints in a timely manner.

Construction Vibration

Potential Effects:

  • Construction vibration may be perceptible at the following buildings near the Corktown Station early works project footprint: 300, 302, 310, 318-330, 361 and 191 King Street East, 2, 26, 53 and 54 Berkeley Street, 240 and 251 Front Street East, 5 Mill Street, and 45 and 51 Parliament Street.
  • Exposure to vibration may result in public annoyance.

Mitigation Measures:

  • Use equipment with low vibration emissions where possible.
  • Conduct off-site construction of components away from sensitive areas.
  • Restrict construction house where possible:
    • Perform construction during daytime hours where possible. If nighttime construction is necessary, the activities with the highest vibration levels should be conducted during daytime periods where possible.
  • Update vibration assessment based upon refined site staging, equipment, construction areas, and building locations prior to the commencement of construction.
  • Use alternative means of construction within 5.8 metres of typical structures so that the City of Toronto’s prohibited vibration level limits are not exceeded.
  • Use alternative means of construction within 11.1 metres of structures that are susceptible to vibration damage so that the vibration level limits for buildings susceptible to vibration damage are not exceeded where applicable.
  • Review other applicable vibration limits that may apply, such as the City of Toronto Sepcification GN117SS.
  • Conduct monitoring and pre-construction inspections in accordance with City of Toronto By-law 514-2008 as requited. Monitoring and pre-construction requirements can be determined by calculation of zone of influence (ZOI)* of construction equipment.
  • Maximize distance between equipment and sensitive receivers where possible.
  • Provide smooth surfaces for trucks to travel.
  • Develop a communication protocol for providing advance construction notices and addressing public complaints in a timely manner.

* The Zone of Influence refers to the area where vibration levels are predicted to exceed the City of Toronto Bylaw 514-2008 screening distance.

← Return to Early Works: Corktown Station

Submissions are closed.