I will follow up with one comment. This amendment was put forward by the Western Canadian Shippers' Coalition, so it wasn't strictly one commodity that was raising concerns. The province of British Columbia was included in this amendment, I think, to address some of the concerns that are also contained within the long-haul interswitching, which would be the exclusion zones.
Evidence of meeting #74 for Transport, Infrastructure and Communities in the 42nd Parliament, 1st Session. (The original version is on Parliament’s site, as are the minutes.) The winning word was amendments.
A video is available from Parliament.