This time it's oil trouble for Lake Pontchartrain

A possible oil sheen is seen as barges lined up to block oil are seen from the air in The Rigolets, which connects the Gulf of Mexico and Lake Borgne to Lake Pontchartrain, in New Orleans, La., Tuesday, July 6, 2010. Oil from the Deepwater Horizon oil spill has infiltrated Lake Pontchartrain for the first time. (AP Photo/Gerald Herbert) (AP Photo/Gerald Herbert)

July 7, 2010 7:52:17 AM PDT
Oil from the ruptured well in the Gulf of Mexico is seeping into Lake Pontchartrain north of New Orleans, threatening another environmental disaster for the huge body of water that was rescued from pollution in the 1990s.