BAYOU CORNE - THE COMMUNITY SWALLOWED BY A SINKHOLE.

About once a month, the residents of Bayou Corne, Louisiana, meet at the Assumption Parish library in the early evening to talk about the hole in their lives. "It was just like going through cancer all over again," says one. "You fight and you fight and you fight and you think, 'Doggone it, I've beaten this thing,' and then it's back." Another spent last Thanksgiving at a 24-hour washateria because she and her disabled husband had nowhere else to go. As the box of tissues circulates, a third woman confesses that after 20 years of sobriety she recently testified at a public meeting under the influence.

"The God of my understanding says, 'As you sow, so shall you reap,'" says Kenny Simoneaux, a balding man in a Harley-Davidson T-shirt. He has instructed his grandchildren to lock up the ammunition. "I'm so goddamn mad I could kill somebody."

But the support group isn't for addiction, PTSD, or cancer, though all of these maladies are present. The hole in their lives is a literal one. One night in August 2012, after months of unexplained seismic activity and mysterious bubbling on the bayou, a sinkhole opened up on a plot of land leased by the petrochemical company Texas Brine, forcing an immediate evacuation of Bayou Corne's 350 residents—an exodus that still has no end in sight. Last week, Louisiana filed a lawsuit against the company and the principal landowner, Occidental Chemical Corporation, for damages stemming from the cavern collapse.

The article by Tim Murphy at Mother Jones is excellent, one of the best of the accounts I've read of the events that led up to the sinkhole collapse, its increase in size, and the consequences that followed for the people who live or once lived in the area.  Since south Louisiana sits upon many hollowed-out salt caverns, which are often used to store natural gas and oil, with some of the oil containing radioactive materials, the question is not if, but when a similar disaster will happen.

Lax regulation and lack of oversight of the dangerous operations of oil and gas and chemical companies here in Louisiana contribute to the number of disasters.  When will we have had enough of the disasters to pass more rigorous safety regulations and provide timely inspections and stiffer penalties for companies who break safety rules?  When will we have had enough to get serious here in Louisiana about research and development in clean energy sources and provision of tax incentives for businesses that provide clean energy and for factories that manufacture equipment for use in supplying clean energy?  

I'm not holding my breath.

 

NEW BUBBLE SITES AT BAYOU CORNE SINKHOLE

 

BAYOU CORNE — Eleven new bubble sites have been found in inundated swampland west of an 8.5-acre sinkhole in northern Assumption Parish, including a frothing spot dubbed the “mother of all bubble sites,” officials said Tuesday.

The sites are roughly in a row west of an unnamed oilfield access road extending south from La. 70 South through the wooded swamp, a parish map shows.

The sites bring to 34 the number of known bubble sites in the Bayou Corne and Grand Bayou areas in the vicinity of the sinkhole on Texas Brine Co. LLC’s leased property.

My guess is that the people who were ordered to evacuate from their homes last year will very likely never be able to return.  The troubling situation in the area is worsening, and who knows when or where it will end?  I wonder if further numbers of residents of nearby areas may be asked to leave.  Highway 70, a much used road, is near the sinkhole activity.  If the highway is impacted and forced to close, it will greatly inconvenience workers and travelers in the area. 

The "mother of all bubble sites"

If we take stuff out from under the ground beneath us, why are we surprised when the ground beneath us collapses?  When will we ever learn?

SINKHOLE, SALT CAVERN, BUTANE UNDER PRESSURE

The Louisiana Department of Environmental Quality has asked the operator of a salt cavern near a sinkhole in northern Assumption Parish to describe what would happen if all butane that could be held in the underground storage facility were released to the surface, state officials said Tuesday.

DEQ Secretary Peggy Hatch asked for the updated worst-case scenario from Crosstex Energy LP of Dallas by close of business Wednesday after reviewing the company’s current risk management plan for the cavern, state officials said in a news release.

The Crosstex salt cavern, which holds 940,000 barrels of liquid butane under pressure, is 1,600 feet from the sinkhole on the adjacent Texas Brine Co. LLC property south of La. 70 south.

DEQ says the Texas Brine is in compliance, but the what-if ramifications if the salt dome has failed are sobering, indeed.

DEQ officials said Tuesday there are “a lot of dynamic things” happening around the butane cavern, including expected well drilling, and community concerns have arisen.
....

DNR scientists suspect the Texas Brine cavern may have been carved too close to the edge of the Napoleonville Dome and failed, releasing its brine contents and causing the sinkhole.
....

DEQ officials said Crosstex’s updated plan submitted in January considers risks for butane, natural gas and other gases and suggests a full release might lead to windows being broken at two-thirds of mile. Piehler said two-thirds of a mile is close to the Bayou Corne community, which has about 150 residences, but does not actually include it.

Jill McMillan, spokeswoman for Crosstex said:

“Based on these findings to date, we believe our facilities have not been impacted by the slurry-filled sinkhole, and there has been no indication their integrity has been compromised,” she said in the email.

Let's hope and pray that none of the worst-case scenarios happen, nor a scenario that none of the experts have thought of, and we hear the lament, "Who would ever have expected...?"  That amount of butane under pressure sounds quite dangerous to me, and I hope the authorities are not playing down the seriousness of the situation as authorities are wont to do.

For those of you who may be concerned about us, we are about 30 miles away from the site and presumably safe.

Thanks to MM for his concern.  I planned to post on the situation yesterday but never got around to it.

TREMORS, BUBBLES IN THE BAYOU, AND A SINKHOLE

 

A 381-foot-deep sinkhole that emerged last week near the Bayou Corne community is filled primarily with salt water mixed with traces of diesel fuel, while the muck and vegetation visible at the surface is only six inches deep, Assumption Parish [Louisiana] officials said Monday.

A nearby 20-million-barrel Texas Brine Co. LLC of Houston salt cavern, which was plugged in 2011, was filled with brine, a water-salt mixture, for structural integrity, company officials have said.

Some closed salt caverns also have diesel fuel at the top as a “pad” to prevent erosion of the salt from the brine, said John Boudreaux, director of the Assumption Parish Office of Homeland Security and Emergency Preparedness.

The disclosures Monday may further point to Louisiana Department of Natural Resources officials’ suggestions Friday that the sinkhole, which has a diameter of 372 feet, was caused by the possibly failed cavern.

“It’s suspect,” Boudreaux said.

In an earlier story in the Baton Rouge Advocate, people who lived in the area of Bayou Corne reported  tremors and gas bubbles in the bayou, as in the photo above.  You may or may not know that earthquakes are extremely rare occurrences in Louisiana.  Gas bubbling up in a Louisiana bayou is also an unusual event.  So what's going on?

Assumption Parish emergency officials have asked to meet with an expert from the U.S. Geological Survey and for portable seismic equipment to get a better understanding of new tremors reported in the Bayou Corne and Grand Bayou areas, officials said Friday.

The earth tremors are being reported by residents in a swampy area of northern Assumption Parish where venting streams of natural gas have been roiling the surface of waterways for about a month.

The source of the natural gas remains uncertain and is not an explosive risk but detailed tests to fingerprint the source of the leaking gas are pending, said John Boudreaux, director of the parish Office of Homeland Security and Emergency Preparedness.

The word from the state at that time was that tests show the gas was not explosive, and no connection has been made between the tremors and the gas bubbles.
  

Then comes the sinkhole. Who would ever have expected...?  But wait! Maybe the sinkhole should not have been so much so much of a surprise to state officials.  

In a Jan. 21, 2011, letter, Mark J. Cartwright, Texas Brine Co. Saltville LLC president, informed DNR about a failed integrity test of the cavern and company officials’ subsequent suspicion that the cavern may have breached the Napoleonville Dome’s outer wall, possibly explaining a loss of pressure in the cavern during the test. (Read letter.)

“One obvious concern is the cavern’s proximity to the edge of salt,” Cartwright wrote to DNR’s Joseph “Joe” S. Ball Jr. “There have been several studies in this regard, and Texas Brine has mapped the salt boundary near the cavern applying available well log data, seismic data, and most recently, vertical seismic data gathered during the workover. At this time, a breach out of the salt dome appears possible.”

Ball is the director of the DNR Injection and Mining Division, which oversees salt caverns.

Neither parish officials nor the public was informed that the integrity of the salt cavern may have been compromised.  Over 300 people have been evacuated from their homes, and more may have to go.  In addition to concerns about natural gas and diesel leaks, we learn that some years ago, Texas Brine was allowed to pump radioactive waste into the cavern which may now be leaking.

As I read the Advocate story linked at the beginning of the post yesterday morning, I noted another story on the same page of the announcement by the governor's office that Scott Angelle, Secretary of the Department of Natural Resources, resigned, no reason given.  We could maybe take a guess as to the reason.

I've been trying to post about the story since there was only one report, but I have not had time.  Now I have four links expanding the story, and I could probably find more.  The story grows and grows, and the situation looks grimmer and grimmer.

Question: If we extract large amounts of materials from beneath the ground, why are we surprised, when the ground collapses?