Natural seep suspected source of Gulf oil sheen
A federal agency says natural seepage of oil and gas from the floor of the Gulf of Mexico may be the source of an oil sheen spotted this week off the Louisiana coast. The Bureau of Safety and Environmental Enforcement says the sheen is near an area where seepage is known to occur. The bureau adds that an investigation by Royal Dutch Shell, which has operations in the area, indicates oil and gas are being released from the seep area. Shell has maintained it does not believe the sheen came from their wells. The sheen was initially measured at about 10 miles long and a mile wide when it was spotted Wednesday, but authorities say it is dissipating. The Coast Guard reports that by Thursday night it was about five miles long and 100 yards wide.
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