Cal. Pub. Resources Code § 3750
Within 60 days after the completion of abandonment of any well, the owner or operator of the well shall make, in such form as the supervisor or the district deputy may direct, a written report of all work done in connection with the abandonment. The supervisor or the district deputy shall, within 10 days after the receipt of a written report of completion, furnish the owner or operator with a written final approval of abandonment, or a written disapproval of abandonment, setting forth the conditions upon which the disapproval is based.
Failure to abandon in accordance with the approved method of abandonment, or failure to notify the supervisor or the district deputy of any test required by the final approval of abandonment to be witnessed by the supervisor, the district deputy or his inspector, or failure to furnish the supervisor or the district deputy, at his request, with any information regarding the condition of the well, shall constitute sufficient grounds for disapproval of the abandonment.
Ca. Pub. Res. Code § 3750