Silvery-blue ribbons of sheen emerged from the lake's bottom as heavy yellow pontoon excavators rolled along the shallow lake. These small air-driven boats were strapped with loops of absorbent boom to soak up oil as the excavators kicked it up. About mid-lake, two enormous lines of containment boom prevented oil from straying too far from the workers soaking it up. Ralph Dollhopf, the EPA's federal on-scene coordinator, said the agency is not focused on punishing Enbridge for missing the deadline but on looking ahead to the final cleanup. The swamp buggies sprayed the pond delta's bottom with jets of water. In an attempt to Massage Oil from the river bottom, a "marsh master," an enclosed amphibious vehicle, drove back and forth along the river. After this round of clean-up, officials have to go back and make sure they got it all, Dollhopf said. They should do the trick, but feel free to adjust them to your liking. Massage Oil