Showing posts with label Deepwater Horizon. Show all posts
Showing posts with label Deepwater Horizon. Show all posts

Monday, 7 May 2018

Earthquake in Gulf of Mexico next to Deepwater Horizon


Earthquake Hits Gulf of Mexico



A very rare event has taken place in the Gulf of Mexico Sunday: A Magnitude 4.6 earthquake!

The quake took place at 12:47 PM eastern US time at a very shallow depth of only 10km. It was felt all the way to New Orleans, Louisiana, but no damage was reported.


Earthquakes in the Gulf of Mexico are incredibly rare. Regional records only show THREE other quakes anywhere in the entire Gulf, over the last 100 years; all smaller than Sunday's.



5/06/2018 -- RARE Earthquake in Gulf of Mexico NEXT TO DEEPWATER HORIZON / BP Oil spill rig


Monday, 17 March 2014

BP back in the Gulf


Four Years After Deepwater Horizon Disaster, U.S. Agrees To Let BP Oil Rigs Back Into The Gulf



15 March, 2014


Get ready, Gulf: BP is back.

The U.S. government on Thursday announced that it will lift the ban that prevented BP from seeking new oil leases in the Gulf of Mexico, ending a lawsuit filed by the British oil company that said it was being unfairly punished for its disastrous 2010 Deepwater Horizon oil spill. The announcement comes nearly four years after the Deepwater explosion, which killed 11 crewmen and resulted in the largest offshore oil spill in U.S. history.

This is a fair agreement that requires BP to improve its practices in order to meet the terms we’ve outlined together,” Craig Hooks, assistant administrator for EPA’s Office of Administration and Resources Management, said in a statement. “Many months of discussions and assessments have led up to this point, and I’m confident we’ve secured strong provisions to protect the integrity of federal procurement programs.”

Following the Deepwater spill, BP wasn’t always banned from seeking federal oil leases in the Gulf. For more than two and a half years after the disaster, the U.S. government continued to purchase fuel under contracts with BP. The last lease sale BP participated in was in June 2012, when they acquired deepwater leases. The U.S. government only announced that it would ban BP and its 21 related entities from seeking government contracts in November of 2012 and January of 2013.

BP filed its lawsuit against the U.S. government in August 2013, claiming the ban was unfair and didn’t take into account the company’s “strong safety record,” the lawsuit reads. The lawsuit sought to make the ban “null, void, and unenforceable,” and asked the court to prevent the EPA from enforcing it.

The agreement announced by EPA to let BP back into the Gulf will end that lawsuit, and will also establish a so-called “administrative agreement” designed to keep BP in check. Under the agreement, BP will be required to retain an EPA-approved independent auditor to conduct annual reviews and report on BP’s compliance. The agreement, EPA said, will include requirements on ethics, corporate governance, and safety procedures. There will be “zero tolerance” for retaliation against employees or contractors who raise safety concerns, the EPA said.

Just because BP wasn’t allowed to bid for new oil leases in the Gulf for the last few years, however, doesn’t mean that the company wasn’t drilling in the Gulf. BP had existing leases it was allowed to operate — more oil leases in the Gulf than any other driller, in fact. It also holds leases in the Gulf from non-U.S. contractors. In November, for example, the company added two new drilling rigs to its offshore Gulf of Mexico operations, under a long-term contract to BP from Seadrill Ltd, an international offshore drilling contractor.

That November announcement brought the company’s total number of Gulf rigs to nine. Now, with the ban on federal drilling leases lifted, the sky’s the limit.

Friday, 22 November 2013

Deepwater Horizon

BP Pays PR Trolls to Threaten Online Critics | Interview with Dahr Jamail


Abby Martin speaks with investigative journalist Dahr Jamail, who has uncovered BP's online scheme to silence critics of their Gulf of Mexico clean-up, with methods such as bribery and death threats



Friday, 15 November 2013

Great Barrier Reef threatened by dispersants

Let us not forget old disasters that are stil with us. Discusses the threat to Australia and the Great Barrier Reef from dispersants

60 Minutes: Crude Solution 

Part 1

When petroleum giant BP spilled millions of litres of crude oil into the Gulf of Mexico three years ago, it was the worst ever offshore oil disaster. Now, this environmental disaster has become a health catastrophe





60 Minutes: Crude Solution - Part 2


Thursday, 31 January 2013

The Gulf of Mexico

Huge New Slick at Site of BP’s 2010 Gulf Oil Spill




28 January, 2013



Wings of Care provided new photos of an oil slick in the area of the Gulf oil spill, noting:

Here is the large surface slick that has been sitting over the Macondo area since last autumn, with as yet no explanation from BP or the US Coast Guard as to its origin. Its persistence, even after the weeks of rough weather we have had in recent weeks and months, suggests that its flow is substantial. Scientists who have sampled it have found evidence of manmade products such as drilling mud.
Wings of Care provided an update yesterday:
The most troubling vision today was the Macondo area itself. The slick that we had first noticed last fall, which was spreading over the area within a half-mile or so of the scene of the Deepwater Horizon explosion, was huge today. It stretched over 7 nautical miles in the south-north direction and was almost a mile wide in some spots. There were some patches of rainbow sheen and even some weathered oil (brownish “mousse”), although overall it remained a light surface sheen.
***
There are patches of rainbow and weathered “mousse” in it as well, which we have not seen out there for many months.
Stuart Smith provides context:
In Louisiana, we are blessed to have a one-woman environmental protection agency by the name of Bonny Schumaker. A retired NASA physicist and pilot, Schumaker has found a way to merge her love of all creatures and her passion for flying to create an amazing operation called On Wings Of Care. She flies animal rescue missions but since 2010 has also devoted a lot of her energy toward helping her fellow citizens learn the truth about the aftermath of BP’s Deepwater Horizon disaster.
When the authorities wanted to restrict the public’s access to the site of the massive spill, Schumaker and her flights have documented both the scope of the spill and the extent of damage to marine life — and she hasn’t let up. In August 2011 and again in October 2012, her photographic evidence has forced BP, the U.S. Coast Guard, and other agencies to acknowledge and to investigate new sightings of fresh oil sheens near where BP’s rig blew up and sank. We’re still not satisfied with BP’s response to the problem, and we’re concerned that the oil may actually be coming from fissures under the sea.
One thing is undeniably clear from the photographic evidence: The oil is still there, 33 months after the explosion.
***
Massachusetts Rep. Edward Markey (who may win election to the U.S. Senate later this year) said of the ongoing problems at the site: “Back in 2010, I said BP was either lying or incompetent. Well, it turns out they were both. This is the same crime scene, and the American public today is entitled to the same information that BP was lying about in 2010 so that we can understand the full dimension of the additional environmental damage.”

Tuesday, 18 December 2012

Deepwater Horizon


TV: Massive oil sheen around BP Deepwater Horizon site in Gulf of Mexico (VIDEO)


17 December, 2012


Watch the video here



Title: Is oil sheen in Gulf of Mexico coming from site of BP spill?
Source: WWL TV
Author: Monica Hernandez
Date: Dec 13 at 10:41 PM
h/t Louisiana Sinkhole Bugle

BP is looking into whether a massive oil sheen in the Gulf of Mexico is coming from the site of the 2010 spill. [...]

Now, investigators are looking into whether the site is the source of continuing oil slicks in the Gulf of Mexico. [...]

BP confirmed that an oil sheen spotted in mid-September was indeed leaking from the containment dome [...] The company plugged that new leak, but days later, more slicks surfaced.

So far, investigators haven’t found any new sources of oil, but haven’t yet inspected the source of September’s leak. [...]

This time, investigators also plan to look at the rig wreckage itself, which they didn’t inspect after mid-September’s leak. [...]

Cpt. Duke Walker, Federal On Scene Coordinator for the Deepwater Horizon Response

  • The only places that we have high suspicion that there might be contained oil is the containment dome where we already found some previously”

  • We haven’t been back to the containment dome yet, or the well heads, that’s in our target package, and it will happen either [Thursday night] or perhaps [Friday]”

  • Walker doesn’t believe any oil is leaking from wells associated with the Deepwater Horizon

Again… They are focusing on if oil is “leaking from wells associated with the Deepwater Horizon”. The real concern appears to be whether oil and gas is coming from fissures or cracks in the seafloor which may have been caused during the initial blowout or the many attempts to cap the well.


Friday, 14 December 2012

Update from the Mexican Gulf




Unreported: “It appears we may have taken another burp” at giant sinkhole — Oil later filmed covering surface, then more land swallowed — All events were on west side of collapse zone (PHOTOS)


13 December, 2012

Follow-up to: TV: Giant Louisiana sinkhole swallows land on southwest side



TitleBayou Corne Inspection Reports
Source: Department of Natural Resources, State of Louisiana
Date: Dec. 9, 2012
h/t Louisiana Sinkhole Bugle & Freedomrox


DNR Caption: Sinkhole 12-9-2012 West Side, it appears we may have taken another burp, vegetatin [sic] floating above sinkhole



Photo from 2 days later shows oil covering surface on sinkhole’s west side:

See the latest flyover footage of the sinkhole here




Oil may be seeping from Deepwater Horizon site

CBS News has learned that BP is set to embark Thursday on the fifth day of a little-known subsea mission under Coast Guard supervision to look for any new oil leaking from the Deepwater Horizon disaster.






13 December, 2012



The BP oil rig exploded in 2010, killing 11 workers and sending a total estimated 206 million gallons of oil gushing into the Gulf of Mexico for three months before it was capped.

In September, a new oil sheen was spotted about 50 miles off the Louisiana coast. Tests confirmed the oil came from the infamous Macondo well underneath the Deepwater Horizon. BP's underwater vehicle observed oil seeping from the well's containment dome and, after a remote operation, declared the leaks plugged on October 23. The company and the Coast Guard said it wasn't feasible to clean up the slick, and that it didn't pose a risk to the shoreline.


But more oil continues to surface. Slicks and sheens of varying sizes and shapes have been documented by satellite photos, as well as aerial video recorded by the non-profit environmental group "On Wings of Care." It's suspected that an unknown amount of oil trapped in the containment dome, and in the wreckage and equipment from 2010, could be seeping out.

Rep. Ed Markey, D-Mass., helped lead the original investigation of BP after the Deepwater Horizon exploded, and says it's deja vu: BP is not turning over videos and information requested by Congress.

"My concern is that substantial amounts of oil could still be leaking from the wreckage," Markey told CBS News.


Last month, BP pleaded guilty to more than a dozen felonies from the 2010 disaster, including lying to Congress about how much oil was really pouring into the water.

Markey says BP is now repeating its stonewalling behavior of two years ago. For more than two months, Markey and Rep. Henry Waxman, D-Calif., have been asking BP for underwater video and information such as the size of the slicks and how much oil could be trapped, but BP has said it will not provide the information due to pending investigations and litigation.

"Back in 2010, I said BP was either lying or incompetent. Well, it turns out they were both," says Markey. "This is the same crime scene, and the American public today is entitled to the same information that BP was lying about in 2010 so that we can understand the full dimension of the additional environmental damage."

BP spent a fortune after the 2010 disaster -- on ads to improve its image. It also spent $18 billion on cleanup and victims, and $4.5 billion more to settle criminal charges.

The Coast Guard canceled an interview with CBS News at the last minute on Wednesday. BP also declined to be interviewed but told us in a statement, "The Macondo well and its associated relief wells are secure." BP also says it will work with the Coast Guard "on any further steps, as needed, to address the results" of this week's survey of the wells and wreckage where oil from 2010 could still be trapped.






On Wings Of Care Gulf Flyover of the Macondo area. For more photos and description and details see today's article here: http://onwingsofcare.org/protection-a-preservation/gulf-of-mexico-oil-spill-2...



Monday, 3 December 2012

Matthew Simmons on Deepwater Horizon

I think that in view of what has been divulged in yesterday's article about the sick children of the Gulf of Mexico it is worthwhile to look back to what the late Matt Simmons (who was as likely as not, murdered for his knowledge) was saying about this at the time, back in 2010.

He pointed out that the seafloor was damaged by the horizontal drilling and that, with the use of toxic Corexit dispersants the oil sank to the bottom and is destroying the Gulf from the bottom up.

It seems that what he was warning us of then is coming to pass and the Gulf is dead. 

La sinkhole link - Matt Simmons states "BP lied about EVERYTHING". HUGE OPEN HOLE IN GULF!




I commend Mr Simmons for caring about people & being willing to take a lot of flack & put his life in jeopardy. In this interview just weeks before his highly suspect death he makes it abundantly clear that "BP LIED THROUGH THEIR TEETH" and ALL they cared about is MONEY! I have another video which shows the gaping hole next to the purported riser however Mr Simmons made it abundantly clear that the actual blowout WAS NOT what we had been shown - that it is STILL an open hole 10 miles away.
http://www.youtube.com/watch?v=OVluWEx9t84

Recently (as in just this last week) fresh oil was seen, collected and analyzed - positively identified as being the same as from the BP blowout. This is available online & if need be I will find it for you AGAIN! http://www.youtube.com/watch?v=AFm2FRXautc

NALCO, manufacturer and distributor of Corexit-9500 IS a subsidiary of BP (See featured video on my channel by Michael Edwards) as is Synthetic Genomics of Rockville Maryland, the creator of Craig Venter's "SYNTHIA", loosed in the Gulf to EAT the oil. http://www.youtube.com/watch?v=vonarBCzlf8

Also of particular significance is another of my recent uploads entitled "BP runs Dept of Energy during BP disaster"! STEVEN CHU was appointed Secretary of Energy who in turn appointed BP Lead Scientist STEVE KOONIN as Deputy Secretary of Energy, from whom Mr CHU had been awarded a 500 MILLION DOLLAR GRANT from BP. There is an abundance of evidence that indicates THIS WAS NO ACCIDENT AT ALL. http://www.youtube.com/watch?v=od88wWepWgA

I am justifiably angered by the Gross Negligence & wanton disregard for the Gulf of Mexico, all the inhabitants of the ENTIRE GULF COAST REGION by BRITISH PETROLEUM, TRANSOCEAN DRILLING, HALLIBURTON as parties to this ongoing Crime. I am peeved State Officials prostituted the once pristine "Sportman's Paradise" my Family knew & helped establish by permitting TEXAS BRINE COMPANY, DOW CHEMICALS and countless OTHER such companies & corporations to DUMP Oilfield Waste in excavated salt caverns. THIS IS TOTALLY UNACCEPTABLE! They also permit the US GOVT to dump radioactive Nuclear Waste into my native Homeland's "bowels".
http://www.youtube.com/watch?v=0F2KIrgwLQQ

The DAMAGE our State has needlessly incurred has been linked to GREED, CORRUPTION, MALFEASANCE IN OFFICE etc HOWEVER ELEVEN MEN DIED horrible deaths and friends, THERE IS NO STATUTE OF LIMITATIONS FOR MURDER!
http://www.youtube.com/watch?v=AFm2FRXautc


Here is another, clearer interview with him





Unfinished Business: The Unspoken Link Between Dispersants and Sick Children in the Gulf of Mexico


Sunday, 2 December 2012

The sick children of the Gulf of Mexico


Unfinished Business: The Unspoken Link Between Dispersants and Sick Children in the Gulf of Mexico
Riki Ott - Marine toxicologist and Exxon Valdez survivor


26 April, 2012

All six of Julie Creppel's young children are sick. Vomiting. Blisters all over their bodies, even in their throats. Boils. Severe headaches that wake them up screaming at night. Nausea. Fevers. Diarrhea. Stomach spasms that contort their bodies in pain. Skin lesions. Psoriasis. Nose bleeds that gush unexpectedly. Respiratory infections. Dizziness. Sinus infections. Hand, Foot, and Mouth disease. Hair loss. And more.

The Creppels live in Boothville, La., in south Plaquemines Parrish. Area health clinics and hospitals are experiencing an influx of sick children for treatment for a range of symptoms that began after the BP oil disaster. The increase in numbers of sick children coincides with the massive spraying of toxic chemical dispersants into the water and air that began in 2010. More troubling is the fact that the children are still having these symptoms to this day.

The Corexit dispersants used in the Gulf are known human health hazards, causing eye and skin irritation, respiratory problems, harm to liver, kidney, and blood cells, injury and even death to unborn babies, immune suppression, skin disorders, and more.

Not surprisingly, the symptoms Julie's children suffer are epidemic across the Gulf states that were impacted by the BP disaster -- and the secondary disaster, the widespread use of Nalco's Corexit dispersants. Most medical doctors in the Gulf have continuously treated the sick with standard drugs used for infections and viruses. Nasonex. Citirizine. DryMax. Azithromycin. Zofran. Cefdinir. Xopenex. Amoxicilin. Flovent. Suprax. Viravan-P. Albuterol. Cefixime. Ichitha ointment. Budesonide. And more.

Some of these are potent drugs that children should not be taking for long periods of time because of side effects, including, ironically, many of the very symptoms being treated. They are taking the drugs for months and now even years because the children (and adults) are not getting better. So the medical doctors prescribe more drugs, but the persistence of the symptoms belies the diagnoses.
2012-12-01-blog2.jpg
This child suffers from frequent spontaneous nose bleeds, a symptom consistent with chemical exposure. (photo courtesy Kindra Arnesen.)
2012-12-01-blog1.jpg
The same child also experiences unexplained hair loss. (photo courtesy Kindra Arnesen.)

It should be clear to the medical community by now that they are misdiagnosing the illness and mistreating the patient. I believe the children are suffering from chemical illness, not from biological agents. This should have been clear back in 2010 after the first six to eight rounds of antibiotics and medication prescribed for babies, elders, coastal residents, visitors, and spill responders didn't clear the symptoms. It should have been clear two years after the disaster in March 2012 when BP completely reversed its position of denial of any harm to human health from oil-dispersant exposure and listed pages of same symptoms and illnesses that people had been reporting for two years as now covered by the BP medical benefits settlement (Exhibit 8) -- so-called, I can only suppose, because it mostly benefits BP, but that's another story.

The problem is the illnesses ­­-- like BP's oil­­ -- just don't "go away" because it's an inconvenience for oil companies and the federal government in charge of an impossible situation: There is no way to clean up oil spills, including tar sands spills. But there are many ways to lessen the impacts to workers and the public, none of which have been done to date in the Gulf.
Plenty has been done to lessen the liability and financial impacts to BP and the other companies involved in this tragedy. The most recent injustice was when U.S. District Judge Barbier dismissed Nalco from lawsuits over health problems stemming from use of its products. Barbier shielded Nalco from liability because, he reasoned, the dispersants had been approved by the federal government, and in most cases pre-approved by the Gulf states for use during spill response. The judge also was noted that a lawsuit might have a "chilling" effect on future use of these same dispersants in oil spill response -- exactly the opposite effect desired by the federal government and the oil industry.

The two main dispersants stockpiled in the United States for use on future spills are Corexit 9500 and Corexit 9527A -- the same dispersants that were known to be harmful to ecosystems and humans before the BP disaster, and that proved to be so after the disaster. These two dispersants are stockpiled in coastal communities around the contiguous United States and in Alaska and Hawaii. Most are owned either by the U.S. Coast Guard regional strike teams or the major national Oil Spill Response Organizations.
The federal government shields itself from any liability for use of these and other dangerous oil spill response products. Even worse, the federal government now considers human health an acceptable "risk tradeoff" for dispersant use. The March 2012 Dispersant Use Initiative, a document intended to guide and plan research needs and decision-making in future spills, states that key needs include, among others, "understanding risk to workers and public safety, and communicating the risk successfully, andunderstanding the trade offs of using dispersants with respect to human health" (emphasis added).


In other words, what happened in the Gulf of Mexico could happen to anyone who lives or works near, or recreates, or visits America's coasts. Many of the same chemicals in dispersants are also ingredients in diluents for tar sands and drilling fluids for hydraulic fracturing and manufactured by -- guess who -- Nalco. We need to stick together on this one, or all get sick together. Making it right in the Gulf is up to all of us before the next marine oil disaster.


Here are some suggestions for how YOU can help make it right in the Gulf.
1. Write a short letter to the U.S. Environmental Protection Agency in support of the People's Petition to amend the National Oil Spill Contingency Plan to ban toxic chemicals, including Corexit dispersants, from use in U.S. territorial waters. The letter should refer the People's Petition, document number AX120019088, and state who you are, why you care, and what you want the EPA to do. Personal letters carry more weight than form letters. Mail to: Lisa Jackson, Administrator, U.S. Environmental Protection Agency, Ariel Rios Building, 1200 Pennsylvania Avenue NW, Washington, DC 20460.

2. Find out what dispersants or products are stockpiled in your backyard for oil spill response. Start by contacting your State Emergency Response Commission (google State name + SERC). The SERC page will list all the Local Emergency Planning Committees. Contact an LEPC near you and ask for a complete list of oil spill response products, which they will have as required under the Community Right-to-Know Act. For coastal communities, I would be surprised if that list did not include the ubiquitous Corexit dispersants. Raise local support to have your municipality pass a rights-based resolution to ban toxic dispersants and chemicals during oil spill response within the city's jurisdiction. A resolution template is available at www.ultimatecivics.org.

3. Ask your congressional delegates to hold hearings to investigate the link between Corexit dispersants and public health, especially children's health, in the Gulf of Mexico. Ask your delegates to support banning Corexit dispersants used during the BP Gulf disaster, as human health "tradeoffs" cannot be justified.

I would like to personally appeal to Warren Buffet to fund community health clinics in the Gulf of Mexico. His stock trading company Berkshire Hathaway bought shares of Nalco in 2009 before the BP disaster as an investment on water filtration, which at the time was most of Nalco's business. Berkshire divested its Nalco holdings in late 2010 -- after Nalco made millions in dispersant sales. The idea for community health clinics originated within the impacted communities as a way of getting treatment for immediate needs, but it was cherry-picked by BP as the centerpiece of BP's medical benefits settlement. One clinic in particular in Jean Lafitte, La., was ready to open its door to clients in fall 2011 but the doors remain closed because the settlement is stalled in court. Opening that clinic, now and independent of BP controls embedded in the settlement, could be done with private donations to the Jean Lafitte Health Clinic.

Early into the BP disaster, I warned people about the short- and long-term consequences of exposure to oil and dispersants. Now those consequences are hitting home -- especially vulnerable are the children. Don't believe those BP ads. We need to all help make this right for real.

Riki Ott will be touring the Gulf of Mexico in February, helping communities organize at the grassroots level to ban toxic chemical dispersants. Persons interested in hosting a training should contact via her web site, www.RikiOtt.com.

Saturday, 1 December 2012

Corexit toxicity

Something we all knew is now being acknowledged by mainstream media

Dispersant Makes Oil 52 Times More Toxic
For microscopic animals living in the Gulf, even worse than the toxic oil released during the 2010 Deepwater Horizon disaster may be the very oil dispersants used to clean it up, a new study finds.


30 November, 2012


More than 2 million gallons (7.5 million liters) of oil dispersants called Corexit 9527A and 9500A were dumped into the Gulf of Mexico in an effort to prevent oil from reaching shore and to help it degrade more quickly.


However, when oil and Corexit are combined, the mixture becomes up to 52 times more toxic than oil alone, according to a study published online this week in the journal Environmental Pollution.



"There is a synergistic interaction between crude oil and the dispersant that makes it more toxic," said Terry Snell, a study co-author and biologist at Georgia Tech. Using dispersants breaks up the oil into small droplets and makes it less visible, but,  "on the other hand, makes it more toxic to the planktonic food chain," Snell told LiveScience.



Toxic mixture



That mixture of dispersant and oil in the Gulf would've wreaked havoc on rotifers, which form the base of the marine food web, and their eggs in seafloor sediments, Snell said.



In the study, Snell and colleagues tested ratios of oil and dispersant found in the Gulf in 2010, using actual oil from the well that leaked in the Deepwater Horizon oil spill and the dispersant. The mixture was similarly toxic at the various ratios tested, the study found. His group exposed several varieties of rotifers to concentrations of the oil-dispersant mixture likely seen over a large area of the Gulf.



"The levels in the Gulf were toxic, and seriously toxic," Snell said. "That probably put a big dent in the planktonic food web for some extended period of time, but nobody really made the measurements to figure out the impact." [Deepwater Horizon: Images of the Impact]



The dispersant makes the oil more deadly by decreasing the size of the droplets, making it more "bio-available" to small organisms, said Ian MacDonald, a researcher at Florida State University. "The effect is specifically a toxic synergy — the sum is worse than the parts," said MacDonald, who was not involved in the research. 



A cautionary tale



This is one of the first studies to look at the impact of the oil-dispersant mixture on plankton. A decline in populations of plankton could impact larger animals all the way up to whales, he said. In general, plankton can rebound quickly, although the toxicity to larvae in sediments is concerning, since it reduces the size of the next generation. This ocean-bottom oil slurry could have also impacted other species that spend part of their life cycles here like algae and crustaceans.



"This is an important study that adds badly needed data to help us better understand the effects of oil spills and oil spill remediation strategies, such as the use of dispersants," said Stephen Klaine, an environmental toxicologist at Clemson University who wasn't involved in the research. "Species' differences in the sensitivity to any toxic compounds, including the ones in this discussion, can be huge."



The results contrast with those released by the Environmental Protection Agency in August 2010. That study found that a mixture of oil and Corexit isn't more toxic than oil alone to both a species of shrimp and species of fish. However, several studies have found the mixture is more toxic than oil to the embryos of several fish species. The EPA could not immediately be reached for comment.



"To date, EPA has done nothing but congratulate itself on how Corexit was used and avow they would do it the same way again," MacDonald said.



However, Snell said the dispersant should not be used. It would be better to let the oil disperse on its own to minimize ecological damage, he said.



"This is a cautionary tale that we need to do the science before the emergency happens so we can make decisions that are fully informed," Snell said. "In this case, the Corexit is simply there to make the oil disperse and go out of sight. But out of sight doesn't mean it's safe in regard to the food web."



"It's hard to sit by and not do something," Snell said."But in this case, doing something actually made it more toxic."