Here’s the opener, but I think the headline above is a little premature:

WASHINGTON — The government is expected to announce on Wednesday that three-quarters of the oil from the Deepwater Horizon leak has already evaporated, dispersed, been captured or otherwise eliminated — and that much of the rest is so diluted that it does not seem to pose much additional risk of harm.
A government report finds that about 26 percent of the oil released from BP’s runaway well is still in the water or onshore in a form that could, in principle, cause new problems. But most is light sheen at the ocean surface or in a dispersed form below the surface, and federal scientists believe that it is breaking down rapidly in both places.
On Tuesday, BP began pumping drilling mud into the well in an attempt to seal it for good. Since the flow of oil was stopped with a cap on July 15, people on the Gulf Coast have been wondering if another shoe was going to drop — a huge underwater glob of oil emerging to damage more shorelines, for instance.
Assuming that the government’s calculations stand scrutiny, that looks increasingly unlikely. “There’s absolutely no evidence that there’s any significant concentration of oil that’s out there that we haven’t accounted for,” said Jane Lubchenco, head of the National Oceanic and Atmospheric Administration, the lead agency in producing the new report.
She emphasized, however, that the government remained concerned about the ecological damage that has already occurred and the potential for more, and said it would continue monitoring the gulf.
“I think we don’t know yet the full impact of this spill on the ecosystem or the people of the gulf,” Dr. Lubchenco said.
Among the biggest unanswered questions, she said, is how much damage the oil has done to the eggs and larvae of organisms like fish, crabs and shrimp. That may not become clear for a year or longer, as new generations of those creatures come to maturity.
Thousands of birds and other animals are known to have been damaged or killed by the spill, a relatively modest toll given the scale of some other oil disasters that killed millions of animals. Efforts are still under way in Louisiana, Mississippi, Alabama and Florida to clean up more than 600 miles of oiled shoreline. The government and BP collected 35,818 tons of oily debris from shorelines through Sunday.

The rest here.