It's an existing railway, but to ensure the stability and sustainability of that connection, as an example, last year, Canadian National filled up a salmon pool on the Matapedia River to stabilize the railway because it's so close to the river. They did that quickly without proper government permits and in a way that was not sustainable for the salmon pool. They filled up the pool to ensure that eventually the transportation to Belledune would be secure.
On September 29th, 2016. See this statement in context.