Isaac Brings Old Oil to La. Beaches Tar could be leftover from BP oil spill By Evann Gastaldo, Newser Staff Posted Sep 5, 2012 8:15 AM CDT 7 comments Comments This Wednesday, April 13, 2011 picture shows an oil tar ball at Fourchon Beach in Port Fourchon, La. (AP Photo/Dave Martin) (Newser) – The latest fallout from Hurricane Isaac: The storm caused old oil to wash up on beaches in Louisiana, and it may be from the Deepwater Horizon spill. Officials restricted fishing and are testing the tar to determine if it's from the 2010 BP spill, the AP reports. Wildlife management teams have also found three oil-covered birds, the Houston Chronicle reports. The teams are investigating nearly 100 reports of hurricane-linked pollution, and are looking for more affected wildlife.