About Arnie Gundersen: Is an energy adviser with 39-years of nuclear power engineering experience. A former nuclear industry senior vice president, he earned his Bachelor's and Master's Degrees in nuclear engineering, holds a nuclear safety patent, and was a licensed reactor operator. During his nuclear industry career, Arnie managed and coordinated projects at 70-nuclear power plants around the country. He currently speaks on television, radio, and at public meetings on the need for a new paradigm in energy production. An independent nuclear engineering and safety expert, Arnie provides testimony on nuclear operations, reliability, safety, and radiation issues to the NRC, Congressional and State Legislatures, blah, blah, blah...
Video also at... http://vimeo.com/21731200
I suppose this relates to Roentgens. 1 Roentgen is 2 billion ionizing events in 1 cc of air, so 2e6 events ( per cc ) per second would be a milliroentgen per second. Maybe that's where the 2 came from. The linked article states, "An exposure of 500 roentgens in five hours is usually lethal for human beings" and 1 milliroentgen per second is 3.6 roentgens per hour, so that's getting up there, if my interpretaion of this number is correct.
BTT
Arnie Gundersen is a questionable source.
I don't think it ALL is; there have been reports of huge amounts of water being sent through the condenser units which are designed to handle the radioactive water.
Clearly a lot of polluted water is making it into the ocean, as we see the daily reports of high levels of short-lived radioactive particles; hopefully these will disperse well while they decay to non-dangerous particles.