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Noise and Vibration - East Harbour Station

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Key Findings

Construction Noise

  • The impact assessment conservatively assumed that all construction equipment would operate in a small work area closest to each sensitive receiver* instead of being spread throughout the project footprint.
  • Without mitigation, there is potential for noise criteria exceedances at the residential developments at 502 Front Street East, 68 Broadview Avenue, 9 Lewis Street, 20 Saulter Street and 2 McGee Street.
  • Potential for exceedances will be reduced by implementing appropriate mitigation measures (see Potential Effects & Mitigation Measures) and through development and implementation of a plan to manage construction noise before construction begins.

* A sensitive receiver is a location that is sensitive to noise, where noise is assessed. These locations include living and sleeping quarters of residences, and sleeping quarters of noise sensitive institutional/commercial land uses (e.g., hotel, hospital, etc.).

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.
  • Without mitigation, there is potential for vibration criteria exceedances at 341 and 353 Eastern Avenue, 9/11 Lewis Street, 20 Saulter Street and 11 Sunlight Park Road.
  • Potential for exceedances will be reduced by implementing appropriate mitigation measures (see Potential Effects & Mitigation Measures) and through development and implementation of a plan to manage construction vibration before construction begins.

Potential Effects & Mitigation Measures

Construction Noise

Potential Effects:

  • Without mitigation, potential for noise level criteria exceedances at 502 Front Street East, 68 Broadview Avenue, 9 Lewis Street, 20 Saulter Street and 2 McGee Street.

Mitigation Measures:

  • Establish and apply project-specific construction noise criteria/exposure limits.
  • 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.
  • Evaluate acoustic equipment enclosures for equipment such as compressors and generators.
  • Use upgraded construction hoarding (considering requirements from CSA Z107.9 for noise barriers) between construction equipment and noise sensitive receivers.
  • Use localized noise barriers for specific equipment and operations, including on corridor construction works.

Example of a construction noise logger. Source: AECOM, 2017.

A solar-powered remote noise monitor.
Source: AECOM, 2011.

  • Reduce 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; and
    • if nighttime construction is necessary, activities with the highest noise levels should be conducted during daytime periods. If construction will occur outside of normal daytime hours, inform local residents of type of construction and expected duration prior to commencing work.
  • Undertake noise monitoring and regular reporting throughout the construction phase as required.
  • Develop a communications protocol for providing advance construction and vibration impact notices and addressing public complaints in a timely manner.

Construction Vibration

Potential Effects:

  • Without mitigation, there is potential for vibration criteria exceedances at 341 and 353 Eastern Avenue, 9/11 Lewis Street, 20 Saulter Street and 11 Sunlight Park Road.

Mitigation Measures:

  • Use equipment with low vibration emissions where possible.
  • Operate construction equipment on lower vibration settings where available.
  • Provide smooth surfaces for trucks to travel.
  • Maximize distance between equipment and sensitive receivers where possible.
  • Restrict construction hours 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; and
    • if construction will occur outside of normal daytime hours, inform local residents in advance, describing type of construction and expected duration.
  • Use alternative construction methods and/or equipment with lower vibration emissions or power settings where possible.
  • Review and refine the construction activities to avoid potential impacts to 341 and 353 Eastern Avenue, 9/11 Lewis Street, 20 Saulter Street and 11 Sunlight Park Road.
  • Conduct monitoring and pre-construction inspections in accordance with City of Toronto Bylaw 514 as required.
  • Develop a communications protocol for providing advance construction noise and vibration impact notices and addressing public complaints in a timely manner.

A vibration monitor.

A vibration monitor.
Source: AECOM, 2020

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