Nothing contained in this chapter shall be construed as imposing any duty, requirement, or enforcement authority upon the administrator appointed pursuant to Code Section 10-1-395 except as described in Code Section 31-38-11, provided that nothing contained in this chapter shall be construed in any manner as limiting the administrator from exercising any of his duties, powers, or authority under any other law. The administrator shall not be liable to any person for any reason as a result of granting or failing to grant any variance under Code Section 31-38-11.