The National Energy Board has invited pipeline companies and industry and other "stakeholders" to participate in an information and consultation session on April 28, 2011 in Calgary. The session will deal with excavation and construction near NEB-regulated facilities and, more particularly, enforcement activities related to safety violations. A table below shows the NEB's proposed response matrix. Note the Board's statement that "depth of cover over pipeline may vary". You can read the NEB letter and discussion document at: Information Session.