From here (see also The Real News Network):
Steve Wereley, an associate professor of mechanical engineering at Purdue University in West Lafayette, Ind., earlier this month made simple calculations from a single video BP released on May 12 and calculated a flow of 70,000 barrels a day, NPR reported last week.
On Wednesday, Wereley told a House of Representatives Energy and Commerce subcommittee that his calculations of two leaks that are on videos BP released on Tuesday showed 70,000 barrels from one leak and 25,000 from the other.
He said the margin of error was about 20 percent, making the spill between 76,000 and 104,000 barrels a day. However, Wereley said he'd need to see videos that showed the flow over a longer period to get a better calculation of the mix of oil and gas from the wellhead.
Rep. Ed Markey, D-Mass., who led the hearing, said he'd work to get that information from BP.
"The true extent of this spill remains a mystery," Markey said. He said BP had said that the flow rate was not relevant to the cleanup effort. "This faulty logic that BP is using is . . . raising concerns that they are hiding the full extent of the damage of this leak."
Only the white house gets a live video for weeks now, dangerous chemical dispersants used to keep oil from reaching the surface, blocking journalists from taking pictures of the beach...you think?