The Board of Adjustment shall hear and decide only such special exceptions as the Board is specifically authorized to pass on by the terms of this chapter, shall decide such questions as are involved in determining whether special exceptions should be granted, and shall grant special exceptions with such conditions and safeguards as are appropriate under this chapter, or deny special exceptions when not in harmony with the purpose and intent of this chapter. A special exception shall not be granted by the Board of Adjustment unless and until:
1. A written application for a special exception is submitted indicating the section of this chapter under which the special exception is sought and stating the grounds on which it is requested.
2. The Board shall fix a reasonable time for the hearing of the special exception, and give not less than seven days or more than 20 days’ public notice. At said hearing, any party may appear in person, by agent or by attorney.
3. The public hearing shall be held. Any party may appear in person, or by agent or attorney.
4. The Board of Adjustment shall make a finding that it is empowered under the section of this chapter described in the application to grant the special exception, and that the granting of the special exception will not adversely affect the public interest.