[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: 40CFR61.351] [Page 207] TITLE 40--PROTECTION OF ENVIRONMENT CHAPTER I--ENVIRONMENTAL PROTECTION AGENCY (CONTINUED) PART 61_NATIONAL EMISSION STANDARDS FOR HAZARDOUS AIR POLLUTANTS --Table of Contents Subpart FF_National Emission Standard for Benzene Waste Operations Sec. 61.351 Alternative standards for tanks. (a) As an alternative to the standards for tanks specified in Sec. 61.343 of this subpart, an owner or operator may elect to comply with one of the following: (1) A fixed roof and internal floating roof meeting the requirements in 40 CFR 60.112b(a)(1); (2) An external floating roof meeting the requirements of 40 CFR 60.112b (a)(2); or (3) An alternative means of emission limitation as described in 40 CFR 60.114b. (b) If an owner or operator elects to comply with the provisions of this section, then the owner or operator is exempt from the provisions of Sec. 61.343 of this subpart applicable to the same facilities. [55 FR 8346, Mar. 7, 1990, as amended at 55 FR 37231, Sept. 10, 1990]