A member who has, or whose relative has, a substantial interest in any item or appeal before the Board shall make full disclosure of such interest to the Board, and shall refrain from participating in any manner in the discussion or the decision on such appeal. (Ord. No. G-4175, §§ 1, 2, 1999; Ord. No. G-5570, § 1(Exh. A), 2010)