No underground tank which has held flammable or combustible liquids shall be rendered temporarily out of service, unless it is understood that the tank will be returned to active service within ninety days, except that the Fire Inspector may authorize additional temporary nonservice extensions of time not to exceed a total of one year's duration from the date a tank first becomes out of service .
Tanks temporarily out of service shall have the fill line, gauge opening and pump connection secured against tampering. Vent lines shall remain open and be maintained in accordance with standards for vent lines of the National Fire Codes, 1979 edition, published by the National Fire Protection Association.
Compliance with this section shall be confirmed and made a matter of record by the Fire Inspector.
(Ord. 81-19. Passed 8-6-81.)