Article today in The Vancouver Sun on the Port Mann Water Supply Tunnel.
http://www.canada.com/vancouversun/n...b5b4df&k=39943
Apparently, the TBM bored tunnel will be 3.5 m in diameter, and a 1.2 m diameter steel pipe will be installed within the tunnel.
Also - from the Surrey Leader March 5, 2014:
http://www.surreyleader.com/news/248589571.html
See the Metro Vancouver website:
http://www.metrovancouver.org/servic...plyTunnel.aspx
http://www.metrovancouver.org/servic...plyTunnel.aspx