Tar patties and tar balls washed up on the Florida Panhandle shoreline recently, indicating that BP PLC's latest attempt to seal off its ruptured wellhead wasn't as effective as the company had hoped. The British Broadcasting Company reported that Admiral Thad Allen, the U.S. Coast Guard's national incident commander, stated approximately 1,000 barrels of a day were currently being captured, but the total flow of leaking oil was approximately 12,000 to 19,000 barrels each day.