Should any appeal, application for variance or interpretation involve any change in regulations applying to land lying within 500 feet of any municipal boundary; existing or proposed county or state park or other recreation area; right-of-way of any existing or proposed county or state parkway, thruway, expressway, road or highway; existing or proposed right-of-way of any stream or drainage channel owned by the county or for which the county has established channel lines; or existing or proposed boundary of any county- or state-owned land on which a public building or institution is situated, such application, accompanied by the notice of public hearing, shall be forwarded to the Westchester County Planning Department for review in accordance with the provisions of the Westchester County Administrative Code. Notice of hearing shall also be sent to the Clerk of any affected municipality, at least 10 days prior to the public hearing. Westchester County Planning Department shall have 30 days in which to recommend approval or disapproval, and no action shall be taken on such application within the statutory referral period. The Board shall not act contrary to the recommendations of the County Planning Department unless by affirmative vote of four members, setting forth fully the reasons for such contrary action.