No assessment shall be made or issued against a vendor or transient guest for any tax imposed by or pursuant to this chapter more than four years after the return date for the period in which the lodging was furnished or more than four years after the return for such period is filed, whichever is later. This section does not bar an assessment:
(a) When the Finance Director has substantial evidence of amounts of taxes collected by a vendor from the lodging of transient guests which were not returned to the City; or
(b) When an assessed vendor failed to file a return as required.
(Ord. 1978-133. Passed 3-15-79.)