As to the right-of-way itself, it's going to depend on the diameter of the pipe, the terrain it crosses through, and a number of other variables. The right-of-way itself could be from 4 metres to 12 metres, typically; and then from the edge of the right-of-way out on either side would be the safety zone of 30 metres. So for any activities that a landowner would intend to do within the safety zone and certainly in the right-of-way, there is a requirement to contact the company.
On February 9th, 2012. See this statement in context.