What will be the noise impacts during tunneling or general construction?
The tunneled segment of the Canada Line will run along the well-developed, busy, inner urban corridor of Granville and Cambie Streets. Much of the tunnel will be constructed by a cut-and-cover method that involves digging a trench from the surface, placing concrete tunnel segments in the trench, and then backfilling and restoring the ground/roadway. Typical noise sources during construction will be trucks and equipment, which will be similar acoustically to the current sound of large trucks travelling along Cambie Street and downtown. The noise impact zone will typically occur over a 25-day period. Exposure to construction noise will peak during surface trench excavation and again during backfilling. Construction noise will likely be most pronounced at the work site at 2nd Avenue and Cambie Street for the tunnel boring activities; near the underground stations; and along excavated portions of the line. Although the downtown corridor runs near or beneath some commercial and retail build
