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Gulf leak eclipses Exxon Valdez as worst US spill

 A group of workers clean the beach of oil residue from the Deepwater oil rig spill near Grand Isle, La., Thursday, May 27, 2010. (AP Photo/Jae C. Hon...
 Louisiana Gov. Bobby Jindal points to oil spill as he talks to reporters as he tours the site where workers are building barriers to keep oil from en...
 Coast Guard Adm. Thad Allen, National Incident Commander for the Depwater Horizon oil spill response,  arrives by helicopter to tour clean-up efforts...

Gulf Oil Spill

A group of workers clean the beach of oil residue from the Deepwater oil rig spill near Grand Isle, La., Thursday, May 27, 2010. (AP Photo/Jae C. Hon...

Gulf Oil Spill

Louisiana Gov. Bobby Jindal points to oil spill as he talks to reporters as he tours the site where workers are building barriers to keep oil from en...

Gulf Oil Spill

Coast Guard Adm. Thad Allen, National Incident Commander for the Depwater Horizon oil spill response, arrives by helicopter to tour clean-up efforts...

As BP labored for a second day Thursday to choke off the leak at the bottom of the Gulf of Mexico, dire new government estimates showed the disaster has easily eclipsed the Exxon Valdez as the biggest oil spill in U.S. history.
The operation known as a "top kill" was suspended for much of Thursday so crews could monitor their work and bring in more heavy drilling mud to shoot into the blown-out well 5,000 feet (1,500 meters) underwater.
The top kill was expected to resume Thursday night, but it could be late Friday or the weekend before the company knows if it has cut off the oil that has been flowing for five weeks.
As the world waited, President Barack Obama announced major new restrictions on drilling projects, and the head of the federal agency that regulates the industry resigned under pressure, becoming the highest-ranking political casualty of the crisis so far.
BP insisted the top kill was progressing as planned, though the company acknowledged drilling mud was escaping from a broken pipe along with the leaking crude.
"The fact that we had a bunch of mud going up the riser isn't ideal but it's not necessarily indicative of a problem," said spokesman Tom Mueller.
The top kill is the latest in a string of attempts to stop the oil that has been spewing since the drilling rig Deepwater Horizon exploded April 20. Eleven workers were killed.
If the procedure works, BP will inject cement into the well to seal it permanently. If it doesn't, the company has a number of backup plans. Either way, crews will continue to drill two relief wells, considered the only surefire way to stop the leak.
A top kill has never been attempted before so deep underwater. BP Chief Operating Officer Doug Suttles said the company is also considering shooting small, dense rubber balls or assorted junk such as golf balls and rubber scraps to stop up a crippled five-story piece of equipment known as a blowout preventer.
The stakes were higher than ever as public frustration over the spill grew and a team of government scientists said the oil has been flowing at a rate 2 1/2 to five times higher than what BP and the Coast Guard initially estimated.
Two teams of scientists calculated the well has been spewing between 504,000 gallons (1.9 million liters) and more than 1 million gallons (3.8 million liters) a day. Even using the most conservative estimate, that means about 18 million gallons (68 million liters) have spilled so far. In the worst-case scenario, 39 million gallons (148 million liters) have leaked.
That larger figure would be nearly four times the size of the Exxon Valdez disaster, in which a tanker ran aground in Alaska in 1989, spilling nearly 11 million gallons (42 million liters).
"Now we know the true scale of the monster we are fighting in the Gulf," said Jeremy Symons, vice president of the National Wildlife Federation. "BP has unleashed an unstoppable force of appalling proportions."
BP spokesman Steve Rinehart said the previous estimate of 210,000 gallons (795,000 liters) a day was based on the best data available at the time. As for the new figures, he said: "It does not and will not change the response. We are going all out on our response."
The spill is not the biggest ever in the Gulf. In 1979, a drilling rig in Mexican waters _ the Ixtoc I _ blew up, releasing 140 million gallons (530 million liters) of oil.
In another troubling discovery, marine scientists said they have spotted a huge new plume of what they believe to be oil deep beneath the Gulf, stretching 22 miles (35 kilometers) from the leaking wellhead northeast toward Mobile Bay, Alabama. They fear it could have resulted from using chemicals a mile below the surface to break up the oil.
In Washington, Elizabeth Birnbaum stepped down as director of the Minerals Management Service, a job she had held since last July. Her agency has been harshly criticized over lax oversight of drilling and cozy ties with industry.
An internal Interior Department report released earlier this week found that between 2000 and 2008, agency staff members accepted tickets to sports events, lunches and other gifts from oil and gas companies and used government computers to view pornography.
Polls show the public is souring on the administration's handling of the catastrophe, and Obama sought to assure Americans that the government is in control and deflect criticism that his administration has left BP in charge.
"My job right now is just to make sure everybody in the Gulf understands: This is what I wake up to in the morning, and this is what I go to bed at night thinking about. The spill," he said.
Obama said he would put an end to the "scandalously close relationship" between regulators and the oil companies they oversee. He also extended a freeze on new deepwater oil drilling and canceled or delayed proposed lease sales in the waters off Alaska and Virginia and along the Gulf Coast.
Fishermen, hotel and restaurant owners, politicians and residents along the 100-mile (160-kilometer) stretch of Gulf coast affected by the spill are fed up with BP's failures to stop the spill. Thick oil is coating birds and delicate wetlands in Louisiana.
"I have anxiety attacks," said Sarah Rigaud, owner of Sarah's Restaurant in Grand Isle, Louisiana, where the beach was closed because blobs of oil that looked like melted chocolate had washed up on shore. "Every day I pray that something happens, that it will be stopped and everybody can get back to normal."
The Coast Guard approved portions of Louisiana's $350 million plan to ring its coastline with a wall of sand meant to keep out the oil.
Federal officials say cleaning up the massive oil spill has already cost the government $87 million, making it the third-most expensive cleanup effort in the country's history.
Seven cleanup crew members who reported dizziness, severe headaches and nausea while working in boats off the Louisiana coast remained hospitalized Thursday. The Coast Guard pulled commercial fishing boats from cleanup efforts in Breton Sound on Wednesday after workers first reported feeling sick.
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Associated Press Writers Seth Borenstein, Matthew Brown, Jason Dearen, Andrew Taylor and Matthew Daly contributed to this report.


Updated : 2021-06-25 02:39 GMT+08:00