Sierra Club sues for impact study of Enbridge pipeline in Michigan

"...“This pipeline was built in 1963, which is more than 60 years ago. There has never been any environmental study done by any agency, federal or state, on any portion of the line,” said Marvin Roberson of the Sierra Club. “We ought to know whether the thing is structurally sound. We ought to know what the potential effects of a leak are...”
http://michiganradio.org/post/sierra-club-sues-impact-study-enbridge-pipeline