California Code, Government Code - GOV § 22970.70

(a) Upon the legal separation or dissolution of marriage of a participant, the court shall include in the judgment or a court order the date on which the parties separated.

(b) If the community property is divided in accordance with subdivision (a) of Section 2610 of the Family Code, the court shall order that the allocations to the participant's account during the marriage be divided into two separate and distinct accounts in the name of the participant and the nonparticipant spouse, respectively. Any contributions or earnings that are not explicitly awarded by the judgment or court order shall be deemed the exclusive property of the participant.