CFR /  Title 27  /  Part 19  /  Sec. 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 Sec. 19.697; or

(c) The permit is automatically terminated under its own terms or in accordance with Sec. 19.684. (26 U.S.C. 5181)