The Coast Guard found out about the oil sheen on September 16 after someone spotted it on a satellite image from the multinational oil and gas company BP, Tippets said. A Coast Guard response team went to the location to collect samples, and sent them to the Coast Guard Marine Safety Lab in Connecticut for testing. Test results are expected in a few weeks, Tippets said.
The service’s Marine Safety Unit Morgan City, in Louisiana, is heading up the investigation of the spill, which is in the part of the Gulf officially designated MC252. No one has reported any adverse effects on the environment or marine life, Tippets said.
The sheen is near the spot where, on April 20, 2010, BP’s Deepwater Horizon drilling rig exploded over the Macondo well, killing 11 workers and spewing oil that spread across a huge portion of the Gulf.
The badly damaged mile-deep well leaked oil into the Gulf of Mexico for five months. On September 19, 2010, retired Coast Guard Adm. Thad Allen, who led the federal disaster response, declared that a cement plug had permanently sealed the leak, so that it posed no further threat.