California Code, Health and Safety Code - HSC § 2828

If the board of supervisors finds that the petition has been properly presented, the board shall, by resolution, fix a time for hearing the petition, which shall be not less than two nor more than five weeks from the time of its presentation. It shall also publish a notice of the time and place of the hearing in a newspaper of general circulation, printed and published in the county, for not less than two weeks prior to the time of the hearing.