(1) A renewal notice may be sent by the department. The department's failure to issue such notice will not excuse the sign owner from the sign owner's duty to make proper application for renewal of a permit. Failure to submit the mandatory sign permit renewal fee within 30 days after expiration of the permit may result in revocation.NEW, Eff. 12/8/75; AMD, 1986 MAR p. 339, Eff. 3/14/86; AMD, 1996 MAR p. 1855, Eff. 7/4/96; AMD, 2008 MAR p. 2476, Eff. 11/27/08.75-15-121, MCA; IMP, 75-15-122, MCA;