[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: 40CFR61.202]

[Page 146]
 
                   TITLE 40--PROTECTION OF ENVIRONMENT
 
         CHAPTER I--ENVIRONMENTAL PROTECTION AGENCY (CONTINUED)
 
PART 61_NATIONAL EMISSION STANDARDS FOR HAZARDOUS AIR POLLUTANTS
--Table of Contents
 
     Subpart R_National Emission Standards for Radon Emissions From 
                          Phosphogypsum Stacks
 
Sec. 61.202  Standard.

    Each person who generates phosphogypsum shall place all 
phosphogypsum in stacks. Phosphogypsum may be removed from a 
phosphogypsum stack only as expressly provided by this subpart. After a 
phosphogypsum stack has become an inactive stack, the owner or operator 
shall assure that the stack does not emit more than 20 pCi/(m\2\-sec) 
(1.9 pCi/(ft\2\-sec)) of radon-222 into the air.

[57 FR 23317, June 3, 1992, as amended at 65 FR 62158, Oct. 17, 2000]