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A human life is worth $6.2 million, Amar said, referring to a value that was used by EPA in the past. What do you need -- about 150 people to die? And that's a billion dollars.
The study says using EPA's assessments for oil spills could push the clean-up costs to as high as $27.7 billion. But the study concedes that it cannot be precise in its cost estimates, because there is little precedent for the EPA to rely upon to inform a direct assessment of the clean up.