The U.S. Environmental Protection Agency has given Enbridge Inc. until Oct. 20 to submit revised plans for additional cleanup work from a July 2010 Michigan pipeline leak that spilled more than 800,000 gallons of gasoline into a Michigan river system.
On Sept. 26, the Calgary, Alberta-based Enbridge said it was increasing its estimate of the cleanup cost by about 20 percent to $700 million.
The EPA issued the order Thursday, saying the cleanup of the submerged oil is expected to last through 2012.
The spill was discovered July 26, 2010 and polluted the Kalamazoo River system in the Marshall area, from Talmadge Creek to Morrow Lake. The pipeline runs from Griffith, Ind., to Sarnia, Ontario.