The head of your agency or his/her designee must approve an exception to the use of the ETS under § 301-73.102 in writing or through electronic means.
Code of Federal Regulations
[FTR Amdt. 2003-07, 68 FR 71030, Dec. 22, 2003, as amended by FTR Amdt. 2007-05, 72 FR 61540, Oct. 31, 2007]