At the time and place set for the hearing upon the decision of the police chief, the city council should give the appealing party and any other interested party a reasonable opportunity to be heard in order to show cause why the determination of the police chief should not be upheld. In all such cases, the burden of proof shall be upon the appellant to show that there was not substantial evidence to support the decision of the police chief. (Ord. 1813 NCS § 1 (part), 1990.)