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"Oil left on the surface of the Gulf of Mexico is breaking down naturally now that the flow of crude has been cut off beneath the surface, a Coast Guard admiral said Sunday after touring the scene.
Rear Adm. Paul Zukunft said the remnants of Tropical Storm Bonnie did little to affect the oil slick, which is breaking down "very quickly."
"The storm itself was not that significant," Zukunft told CNN after an aerial survey of the northern Gulf on Sunday. "We've had nine days of no new oil being released, so what we're seeing is the remnants of oil that was released nine days ago."
BP crews managed to temporarily cap the undersea well at the heart of the three-month-old disaster on June 15. But efforts to close off the gusher permanently by drilling a relief well were delayed by the storm, which forced the ships involved in the process to evacuate the area. Those ships have returned to the area since the storm, he told reporters Sunday night.
Zukunft told reporters that he saw only one large patch of emulsified oil, about 12 miles off Grand Isle, Louisiana, during his six-hour aerial tour. No oil could be seen in Louisiana's Lake Borgne, Lake Pontchartrain or Chandeleur Sound, while only a light sheen was visible in other parts of the Gulf.
"The oil is basically approaching the end of its life cycle," he said."
http://www.cnn.com/2010/US/07/25/gulf.oil.disaster/?hpt=T2