U.S. Coast Guard responders continue to monitor and prepare salvage, firefighting and pollution contingencies after a tug and barge collided with a liquid petroleum gas pipeline south of New Orleans on Tuesday.

The fire has reduced in size by 30% and there are no reports of oil in the water. Visual imagery initially indicated potential pockets of crude oil. However, those areas have been determined to be particulate ash from the liquefied natural gas burn off, according to the release.

The owner of the pipeline is Chevron Corp. (NYSE: CVX), ...