Spill reported off Grand Isle confirmed to be oil, Daily Comet, March 20, 2011 at 4:50 pm
...Grand Isle Fire Chief Aubrey Chiasson confirmed this morning that the substance is oil, but officials have not determined where it came from.
After completing an aerial survey of the spill with Jefferson Parish John F. Young Jr. this afternoon, Chiasson said they saw patches of "light- to moderate-weathered oil" starting about three miles from the Caminada Pass in the Gulf, stretching out at least five miles. He said oil has also reached beaches in Grand Isle and Port Fourchon. ...
Grand Isle Fire Chief Aubrey Chiasson said he first heard of the substance Saturday afternoon, after officials started calling him. Originally, the substance was thought to be silt or dredging material, but later reports confirmed it is oil. ...
"We had a report from a crabber that it's black oil," Chiasson said.