The director shall serve notice of the time and place of a hearing to revoke or modify any order permitting a variation not less than ten days prior to such hearing, upon all persons who will be subjected to greater restrictions if such order is revoked or modified as proposed, and upon all other persons who have filed with the director a written request for such modification, either in the manner required by law for the service of summons, or by first-class mail, postage prepaid.
(Prior code § 6.04.210 (Ord. 284 § 26, 1947))