27 C.F.R. § 19.695

When a proprietor permanently discontinues operations as an alcohol fuel plant, the proprietor must file a letterhead notice with the appropriate TTB officer along with the following:

(a) The original copy of the alcohol fuel plant permit and the proprietor's request that the permit be cancelled;

(b) A written statement disclosing whether or not all spirits, including fuel alcohol, have been lawfully disposed of, and whether or not there are any spirits in transit to the premises; and

(c) A report on form TTB 5110.75, Alcohol Fuel Plant Report, covering the discontinued operations, with the report marked “Final Report”.