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Bathurst Collector Langstaff Trunk Sewer

  • The Regional Municipality of York retained WSP as Program Managers to act as Owner’s Engineer in the preparation of preliminary design pre-qualification documents and tender documents, and to administer the design-build contract during construction for this $77M, soft-ground tunnel.
  • In order to minimize environmental impacts, WSP was asked to prepare a background Environmental Impact Assessment, and to obtain a contingency Permit to Take Water (PTTW) from the Ontario Ministry of the Environment.
  • Dewatering activities were also monitored.


  • Environmental Studies
  • Contingency Permit to take Water
  • Pre-Design
  • Program Management

Location: Richmond Hill, Ontario