In addition to Section 18.34.050 governing the lapse or denial of nonconforming sign permits or sign files, any sign permit or sign file shall lapse and become void within thirty days of notice from the county to the last premises, sent to the premises if any of the following apply:
A. The ongoing business activity on the premises is discontinued for a period of one hundred eighty days or more and is not renewed
B. The sign or signs for which the permit or sign file was issued is altered or modified illegally or
C. For off-site signs, the permit is not renewed within the specified time period.
(Ord. 92-19 (part), 1992.)