[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: 40CFR61.122]

[Page 80]
 
                   TITLE 40--PROTECTION OF ENVIRONMENT
 
         CHAPTER I--ENVIRONMENTAL PROTECTION AGENCY (CONTINUED)
 
PART 61_NATIONAL EMISSION STANDARDS FOR HAZARDOUS AIR POLLUTANTS
--Table of Contents
 
 Subpart K_National Emission Standards for Radionuclide Emissions From 
                       Elemental Phosphorus Plants
 
Sec. 61.122  Emission standard.

    Emissions of polonium-210 to the ambient air from all calciners and 
nodulizing kilns at an elemental phosphorus plant shall not exceed a 
total of 2 curies a year; except that compliance with this standard may 
be conclusively shown if the elemental phosphorus plant:
    (a) Installs a Hydro-Sonic [reg] Tandem Nozzle Fixed 
Throat Free-Jet Scrubber System including four scrubber units,
    (b) All four scrubber units are operated continuously with a minimum 
average over any 6-hour period of 40 inches (water column) of pressure 
drop across each scrubber during calcining of phosphate shale,
    (c) The system is used to scrub emissions from all calciners and/or 
nodulizing kilns at the plant, and
    (d) Total emissions of polonium-210 from the plant do not exceed 4.5 
curies per year.

Alternative operating conditions, which can be shown to achieve an 
overall removal efficiency for emissions of polonium-210 which is equal 
to or greater than the efficiency which would be achieved under the 
operating conditions described in paragraphs (a), (b), and (c) of this 
section, may be used with prior approval of the Administrator. A 
facility shall apply for such approval in writing, and the Administrator 
shall act upon the request within 30 days after receipt of a complete 
and technically sufficient application.

[56 FR 65943, Dec. 19, 1991]