[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: 40CFR61.200] [Page 145] 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. 61.200 Designation of facilities. Source: 57 FR 23317, June 3, 1992, unless otherwise noted. The provisions of this subpart apply to each owner or operator of a phosphogypsum stack, and to each person who owns, sells, distributes, or otherwise uses any quantity of phosphogypsum which is produced as a result of wet acid phosphorus production or is removed from any existing phosphogypsum stack.