BP is scaling back its cleanup efforts from the Deepwater Horizon oilspill in areas outside Louisiana. Here, a photo from last September shows alluvial clay and tar mats on the shore of Elmer's Island, in Jefferson Parish, La. Gerald Herbert/AP hide caption

toggle caption Gerald Herbert/AP

The Deepwater Horizon oil rig burned on April 21, 2010. U.S. Coast Guard/Getty Images hide caption

toggle caption U.S. Coast Guard/Getty Images

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