Friday, May 07, 2010

The 2010 spill – update

Oil has been confirmed to have made land impact on Louisiana’s easternmost border.
From Raw Story:
Oil sheen from a massive crude spill in the Gulf of Mexico has started washing ashore on an island off Louisiana, officials said Thursday, confirming a land impact for the first time.
mississippi oil spill Sheen of oil confirmed ashore on Louisiana islandBP spokesman John Curry said three emergency response teams had been sent to the island, some 30 miles (50 kilometers) offshore, and were deploying inflatable booms to try to protect the prime marsh and wildlife area.
The Chandeleur Islands form the easternmost point of Louisiana and are part of the Breton National Wildlife Refuge -- the second oldest refuge in the United States and home to countless endangered shorebirds.
The NYTimes.com reports on the dangers to the entire food chain from both the oil spill and the incredible amount of chemicals being used to limit its impact on the environment:
But biologists are increasingly alarmed for wildlife offshore, where the damage from a spill can be invisible but still deadly. And they caution that because of the fluidity between onshore and offshore marine communities, the harm taking place deep at sea will come back to haunt the shallows, whether or not they are directly hit by the slick.
The gulf’s deeper water harbors 10 species of threatened sharks, 6 species of endangered turtles, manatees, whales and innumerable fish.
It is also a temporary home for the eggs of dozens of species of fish and shellfish, whose offspring spend their earliest days floating along currents at the surface of the water — the very layer where most of the oil settles.
“Unfortunately, we’ve had a lot of experience in how oil affects marine life, ecosystems, coastal communities, and fisheries,” said Christopher Mann, with the marine program of the nonprofit Pew Environment Group. “The iconic images of oiled seabirds are just the tip of the iceberg, because oil spills affect life up and down the food chain.”
Spring is mating and spawning season for almost everything in the gulf: Fill a jar with plankton from the local waters in the spring and it will typically contain the larvae of 80 species. All the eggs and hatchlings are surface dwellers, with almost no ability to swim away from the slick.
The fumes are particularly dangerous when the crude is fresh, because some strong toxins evaporate early. With a onetime spill, the slick gets less dangerous over time, but in the gulf, where the well has not been capped, there is a constant supply of new vapors.
Dr. Solangi said he was worried for dolphins. “They have to be awake to breathe,” he said. “If they become anesthetized, they will die. If they become intoxicated by fumes, they won’t survive.”
Even normal feeding might expose sea creatures to harm from the spill: sea grass and other vegetation covered in oil are ingested by fish that are then eaten by bigger fish and finally by manatees or other marine species. It is this food-chain effect that worries Larry Schweiger of the National Wildlife Federation.
“It is not a question of whether all these species will be affected now. It is when,” he said.
Finally, CNN.com reports that the first containment dome is ready and BP has already started work on lowering it in position over the largest leak:
A massive dome began its descent into the Gulf of Mexico to cap a gushing oil leak about 5,000 feet below the surface, a BP official said Friday.
The four-story oil containment dome made its way beneath the Gulf of Mexico early Friday to capture leaking oil.
The arduous process of lowering the four-story containment dome and getting it in place is expected to continue into the weekend. The technique has never been attempted at the depth of the leak spewing from the sunken oil rig, officials said.
Oil washed ashore on Louisiana's barrier islands and drifted west past the mouth of the Mississippi River on Thursday. An ominous pinkish-orange foam mixture of seawater and crude oil streaked across large stretches of water in the northern Gulf and turned up on the shores of the Chandeleur Islands, off southeastern Louisiana.
The hope is that the container will collect the leaking oil, which would be sucked up to a drill ship on the surface. If the operation is successful, BP plans to deploy a second, smaller dome to deal with a second leak in the ruptured pipe.
Let’s hope this “band-aid” works and the biggest leak is patched.  That would potentially decrease the amount of oil being dumped daily into the ocean.

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