Federal records obtained by the Detroit Free Press show that government regulators raised concerns as early as 2002 about a company whose ruptured pipeline spilled up to 1 million gallons of oil in southern Michigan.
The Free Press reported Saturday that the documents reveal that regulators had over the years raised questions about Enbridge Energy Partners' corrosion monitoring and its delayed reporting of spills.
In one case, regulators warned the Canadian company about its apparent failure to repair parts of the vast network of pipelines it owns.
A segment of an Enbridge pipeline that runs between Griffith, Ind., and Sarnia, Ontario, failed July 26, sending up to 1 million gallons of oil into southern Michigan waterways.
A cause for that spill has not yet been determined.
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