Trans Mountain Corp (TMC), the crown corporation that is building the expansion, had sought a route deviation on a 1.3-kilometre (0.8 mile) section of pipeline near Kamloops, British Columbia, to avoid planned micro-tunneling construction that it said would be unfeasible.

(Reporting by Seher Dareen in Bengaluru and Nia Williams in Canada; Editing by Pooja Desai)