Cal. Public Resources Code § 3332

Within 30 days after the written notice of the entry of a final order of the supervisor, or within such further time as the supervisor may grant for good cause shown, but in no event shall such time be extended more than 60 days from the written notice of entry of such final order, any person affected thereby may file with the supervisor an application for a rehearing in respect to any matter determined by such order, setting forth the particulars in which such order is considered to be objectionable. The supervisor shall grant or deny any such application in whole or in part within 30 days from the date of the filing thereof, and failure to act thereon within such period shall constitute a denial of such application. In the event that a rehearing is granted, notice to such effect shall be given to all persons affected by such order, advising them of the date of such rehearing and of their right to appear and be heard thereon. The date set for any such rehearing shall be not less than 30 days nor more than 60 days from the date the application for rehearing is granted, unless, upon good cause shown, the time is extended by the supervisor, but in no event shall such time be extended more than 90 days from the date such application for rehearing is granted. The supervisor may enter an amended order or a new order after the rehearing as may be required under the circumstances. The provision of Article 6 (commencing with Section 3350) of Chapter 1 of Division 3 relating to appeals and review shall not apply to this article.