§ 89.21. Service by the Board.

 Orders, notices and other documents originating with the Board, including all forms of Board action, petitions and similar process, and other documents designated by the Board for this purpose, shall be served by the Office of the Secretary by mail, except when service by another method shall be specifically required by these rules, by mailing a copy thereof to the person to be served, addressed to the person designated in the initial pleading or submittal at the address of record of such person. When service is not accomplished by mail, personal service may be effected by any one duly authorized by the Office of the Secretary in the manner provided in 231 Pa. Code Rule 1504 (relating to service of process in actions in equity).