The Board shall have the following powers:
1. To hear and decide appeals where it is alleged there is error in any order, requirement, decision, or determination made by an administrative official in the enforcement of this Chapter or any supplement or amendment.
2. To hear and decide special use exceptions to the terms of this Chapter upon which the Board is required to pass under this Chapter.
3. To authorize upon appeal in specific cases such variance from the terms of this Chapter as will not be contrary to the public interest, where owing to special conditions, a literal enforcement of the provisions of the Chapter will result in practical difficulty and unnecessary hardship to the applicant so that the spirit of the Chapter shall be observed and substantial justice done.
Each Board Member shall serve a term of five (5) years.