MARSHALL (WWJ/AP) – The U.S. Environmental Protection Agency on Wednesday told Enbridge Inc. that the pipeline company’s massive 2010 oil spill in the Kalamazoo River system requires more cleanup work.

The Calgary, Alberta-based company owns a 30-inch pipeline from Griffith, Ind., to Sarnia, Ontario. It burst near Marshall, Mich., in July 2010, spewing oil into the Kalamazoo River and Talmadge Creek, about 60 east of Grand Rapids.

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EPA says crews removed 1.1 million gallons of oil and 200,000 cubic yards of oil-contaminated sediment and debris.

EPA’s efforts over the past few years have focused largely on removing submerged oil from a roughly 200 acres of river bottom, using boats and heavy equipment to jolt the oil to the surface, said Ralph Dollhopf, coordinator of the U.S. Environmental Protection Agency team overseeing the cleanup. EPA has also installed structures that capture oil as it flows naturally with the current.

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The agency says it informed Enbridge more work is need upstream from the Ceresco and Battle Creek dams and Morrow Lake. It says Enbridge has 10 days to request a conference about the proposed order.

Company spokesman Jason Manshum says the EPA’s notice isn’t a formal directive and says Enbridge is reviewing it.

Catch up on the Kalamazoo River oil spill, here.

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