19.679—Duration of permit.
The proprietor of an alcohol fuel plant may conduct the operations authorized by the permit on a continuing basis unless:
(a)
The proprietor voluntarily surrenders the permit;
(b)
TTB suspends or revokes the permit pursuant to § 19.697; or
(c)
The permit is automatically terminated under its own terms or in accordance with § 19.684.
Code of Federal Regulations
(
26 U.S.C. 5181
)