Dr. Conca reports that there are some easy decisions to make that will save us a trillion dollars and they could be made soon by the Environmental Protection Agency. EPA could raise the absurdly low radiation levels considered to be a threat to the public across the regulatory spectrum. These radiation limits would go from between 4 to 25 mrem (40 to 250 microSv) to more reasonable levels, like 500 to 20,000 mrem, depending upon the regulation and the particular office in EPA.
We have a patchwork of radiation-related statutes from those that apply to routine operation of nuclear power plants, and other fuel-cycle facilities like nuclear waste repositories, found in 40 CFR 190 (Atomic Insights) to those in the EPA Protective Action Guides (Reason) that provide threat levels for evacuations in the case of a nuclear disaster like Fukushima or a dirty bomb attack. A dirty bomb, or radiation dispersal devise, is radioactive material dispersed in a populated area using ordinary explosives like a car bomb.