The federal government is preparing to publish advice for state and local governments on how to react if terrorists set off a "dirty bomb," including how much radiation exposure from such an attack is acceptable for the public.
The document is intended for the officials who would oversee public health and safety after such an attack, to help them decide when activity could return to normal.
"There's a lot of consternation over what the cleanup levels should be," Brooke Buddemeier, a radiation specialist for the Department of Homeland Security, told a group of nuclear specialists during a presentation last week. "We had a pretty good idea what they should be for Superfund sites or a Nuclear Regulatory Commission power plant release."
But an attack using conventional explosives to spread radioactive materials - a dirty bomb - would probably occur in a far more prominent location than a toxic-waste site or a power plant, and the need to resume using the site would be higher, said Mr. Buddemeier, in his presentation to a National Academy of Sciences group.
http://www.nytimes.com/2004/09/27/politics/27nukes.html