A municipality is not required to comply with the provisions of AS 39.90.100 - 39.90.150 if the municipality has adopted an ordinance that provides protections for its employees and other persons that are substantially similar to the protections under AS 39.90.100 - 39.90.150. Notwithstanding AS 29.25.070, the ordinance may provide for a civil penalty for violation of the ordinance not to exceed $10,000.