Hurricane Isaac's Eye Wall Expected to Barrel 'Right Over' Louisiana Sinkhole

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The exploratory rig is being assembled but parts of it are still being shipped. It could take 40 days for the actual drilling to begin, even with an expedited process, Torres said.

In the meantime, officials and residents are left to worry about the possibility of an explosion.

All of the neighboring natural gas pipelines that were of concern last week have been depressurized and emptied, but the nearby caverns are still causing concern.

One cavern that contains 940,000 gallons of butane is of particular concern, Torres said. It's about 2,000 feet from the sinkhole.

Authorities are concerned about the massive explosion that could result from the butane's release to the surface if the sinkhole were to expand far enough to reach it.

There was bubbling in the water and the sinkhole is near areas where there has been exploration for oil and gas in the past. This would make the presence of low levels of naturally occurring radioactive material (NORM) possible.

The state's Department of Environmental Quality said water samples from the sinkhole showed oil and diesel fuel on its surface, but readings have not detected any dangerous levels of radiation.

"It's not going to get fixed tomorrow," Torres said. "We urge the residents to leave to protect themselves. We have no idea how far this sinkhole will expand or in what direction. We have no clue."

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