[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: 40CFR61.125] [Page 81] 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. 61.125 Test methods and procedures. (a) Each owner or operator of a source required to test emissions under Sec. 61.123, unless an equivalent or alternate method has been approved by the Administrator, shall use the following test methods: (1) Method 1 of appendix A to 40 CFR part 60 shall be used to determine sample and velocity traverses; (2) Method 2 of appendix A to 40 CFR part 60 shall be used to determine velocity and volumetric flow rate; (3) Method 3 of appendix A to 40 CFR part 60 shall be used for gas analysis; (4) Method 5 of appendix A to 40 CFR part 60 shall be used to collect particulate matter containing the polonium-210; and (5) Method 111 of appendix B to 40 CFR part 61 shall be used to determine the polonium-210 emissions. [54 FR 51699, Dec. 15, 1989, as amended at 65 FR 62156, Oct. 17, 2000]