Cal. CCP § 631.3

(a) Notwithstanding any other law, when a party to the litigation has deposited jury fees with the judge or clerk and that party waives a jury or obtains a continuance of the trial, or the case is settled, none of the deposit shall be refunded if the court finds there has been insufficient time to notify the jurors that the trial would not proceed at the time set. If the jury fees so deposited are not refunded for any of these reasons, or if a refund of jury fees deposited with the judge or clerk has not been requested, in writing, by the depositing party within 20 business days from the date on which the jury is waived or the action is settled, dismissed, or a continuance thereof granted, the fees shall be transmitted to the Controller for deposit into the Trial Court Trust Fund.

(b) All jury fees and mileage fees that may accrue by reason of a juror serving on more than one case in the same day shall be transmitted to the Controller for deposit into the Trial Court Trust Fund. All jury fees that were deposited with the court in advance of trial pursuant to Section 631 prior to January 1, 1999, and that remain on deposit in cases that were settled, dismissed, or otherwise disposed of, and three years have passed since the date the case was settled, dismissed, or otherwise disposed of, shall be transmitted to the Controller for deposit into the Trial Court Trust Fund.

(c) The fee described in subdivision (b) of Section 631 shall be nonrefundable and is not subject to this section.