Cal. Fin. Code § 31604
If the commissioner finds, with respect to an application for approval of a merger, purchase, or sale:
(c) That the merger, purchase, or sale will not be detrimental to the public convenience and advantage, or, if the merger, purchase, or sale would be detrimental to the public convenience and advantage, that it is necessary in the interests of the safety and soundness of any of the parties to it;
The commissioner shall approve the application. If, after notice and a hearing, the commissioner finds otherwise, he or she shall deny the application.