California Code, Penal Code - PEN § 18410

(a) If the person who receives a petition under Section 18405 requests a hearing, the court clerk shall set a hearing no later than 30 days from receipt of that request.

(b) The court clerk shall notify the person, the law enforcement agency involved, and the district attorney of the date, time, and place of the hearing.

(c) Unless it is shown by a preponderance of the evidence that the return of the firearm or other deadly weapon would result in endangering the victim or the person reporting the assault or threat, the court shall order the return of the firearm or other deadly weapon and shall award reasonable attorney's fees to the prevailing party.