Residents along Louisiana Highway 39 near the Mississippi River were asked to evacuate Friday morning after a tank containing chlorine was found leaking in the Mississippi River.
   Hazardous materials teams were sent to the area to deal with the tank.
   The tank is in an area that straddles the St. Bernard-Plaquemines Parish line. All Plaquemines residents had been ordered out earlier because of storm surge from Hurricane Isaac.
   It was not immediately clear how many St. Bernard residents were affected. Many in the area left in advance of the storm.