It’s been a few weeks since I posted about Entergy responding to Rep. Edward Markey (D-Mass.) on the strontium-90 (Sr-90) issue at the Vermont Yankee nuclear plant . NRC Chairman Gregory Jaczko has since weighed in, on the NRC’s behalf, with a letter he sent to the congressman. Of note, the chairman’s letter echoes what Entergy officials and the Vermont Department of Health (VTDH) have been saying all along: Because there are multiple potential sources of Sr-90, including nuclear weapons testing by multiple countries in the middle of the last century, it is very difficult to draw conclusions about the source of any particular Sr-90 contamination that is found in the environment unless there is additional supporting evidence. Because of this fact, Jaczko believes that Entergy’s Laurence Smith, manager of communications, is fair in one of his statements that “There is absolutely no evidence to suggest that Vermont Yankee is the source for the strontium-90.” He writes: ...
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