[Code of Federal Regulations]
[Title 40, Volume 8]
[Revised as of July 1, 2007]
From the U.S. Government Printing Office via GPO Access
[CITE: 40CFR61.222]

[Page 152]
 
                   TITLE 40--PROTECTION OF ENVIRONMENT
 
         CHAPTER I--ENVIRONMENTAL PROTECTION AGENCY (CONTINUED)
 
PART 61_NATIONAL EMISSION STANDARDS FOR HAZARDOUS AIR POLLUTANTS
--Table of Contents
 
   Subpart T_National Emission Standards for Radon Emissions From the 
                    Disposal of Uranium Mill Tailings
 
Sec. 61.222  Standard.

    (a) Radon-222 emissions to the ambient air from uranium mill 
tailings pile that are no longer operational shall not exceed 20 pCi/
(m\2\-sec) (1.9 pCi/(ft\2\-sec)) of radon-222.
    (b) Once a uranium mill tailings pile or impoundment ceases to be 
operational it must be disposed of and brought into compliance with this 
standard within two years of the effective date of the standard. If it 
is not physically possible for an owner or operator to complete disposal 
within that time, EPA shall, after consultation with the owner or 
operator, establish a compliance agreement which will assure that 
disposal will be completed as quickly as possible.

[54 FR 51702, Dec. 15, 1989, as amended at 59 FR 36301, July 15, 1994; 
65 FR 62158, Oct. 17, 2000]