The notice of the hearing may be effected by mail, or by publication pursuant to Section 6062 of the Government Code in the area which is designated. It shall specify the time and place of such hearing, which shall not be prior to 15 days from the mailing, or from the final publication of such notice. If no daily newspaper of general circulation is published in the area which is designated, publication pursuant to Section 6066 of the Government Code shall be considered proper publication of notice.