In order to make continuous progress toward the long-term goal established in section
2661 of this title, the Administrator of the Environmental Protection Agency shall, not later than June 1, 1989, publish and make available to the public an updated version of its document titled “A Citizen’s Guide to Radon”. The Administrator shall revise and republish the guide as necessary thereafter.
(b) Information included
(1) Action levels
The updated citizen’s guide published as provided in subsection (a) of this section shall include a description of a series of action levels indicating the health risk associated with different levels of radon exposure.
(2) Other information
The updated citizen’s guide shall also include information with respect to each of the following:
(A)The increased health risk associated with the exposure of potentially sensitive populations to different levels of radon.
(B)The increased health risk associated with the exposure to radon of persons engaged in potentially risk-increasing behavior.
(C)The cost and technological feasibility of reducing radon concentrations within existing and new buildings.
(D)The relationship between short-term and long-term testing techniques and the relationship between
(i) measurements based on both such techniques, and
(ii) the actions  levels set forth as provided in paragraph (1).
The table below lists the classification updates, since Jan. 3, 2012, for this section. Updates to a broader range of sections may be found at the update page for containing chapter, title, etc.
The most recent Classification Table update that we have noticed was Tuesday, August 13, 2013
An empty table indicates that we see no relevant changes listed in the classification tables. If you suspect that our system may be missing something, please double-check with the Office of the Law Revision Counsel.