Now they estimate that, before it's stopped, the British Petroleum oil spill is going to top the 11 million gallons of oil dumped by the Exxon Valdez in Alaska in 1989.From an AP report:The Coast Guard and BP have said it's nearly impossible to know exactly how much oil has gushed since the blast, though it has been roughly estimated to be at least 200,000 gallons a day.At that rate, it would