Notice of the hearing shall be published at least once, and at least 10 days prior to the hearing, in a newspaper of general circulation in each of the counties in which the hearing is to be held, or if no such newspaper is published in that county or counties then in such a newspaper in an adjoining county. The hearing shall be conducted by either (a) the commission, (b) a member of the commission designated by it, or (c) the director if requested so to do by the commission.
At least 10 days prior to the holding of any such hearing the commission shall notify each member of the board of supervisors, at his home address, of each county affected of the details of its proposed order affecting such county and the time and date of the hearing.