“Micro-tunneling was selected as the safest method to cross the Morice River following extensive engagement with Indigenous communities, along with comprehensive environmental and technical assessments,” the release stated. The smaller boring machine is operated remotely via computer console.Ĭoastal GasLink said they chose this method because it is less disruptive than open-cut methods. Microtunneling is a technologically-advanced technique for building trenchless, small-diameter tunnels that are too small for a traditional human-operated boring machine to complete. Once the pipe is pulled through the concrete tunnel this summer, all major river crossings will be 100 per cent complete.ĭuring micro-tunnelling, due to subsurface conditions, CGL found it was able to revise its exit point for the tunnel by 28 metres, making it a total of 847 metres in length, the company said in a press release this morning (May 18).Ĭontractors are now clearing the area so construction of the new exit point can begin. to the processing facility currently under construction in Kitimat. The tunnel marks the 10th and final major river crossing for the 670-kilometre pipeline that will transport natural gas from northeast B.C. Coastal GasLink (CGL) has completed micro-tunnelling under the Morice River south of Houston.
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