CA Civ Proc Code Section 2031.285

(a)

If electronically stored information produced in discovery is subject to a claim of privilege or of protection as attorney work product, the party making the claim may notify any party that received the information of the claim and the basis for the claim.

(b)

After being notified of a claim of privilege or of protection under subdivision (a), a party that received the information shall immediately sequester the information and either return the specified information and any copies that may exist or present the information to the court conditionally under seal for a determination of the claim.

(c)

(1)Prior to the resolution of the motion brought under subdivision (d), a party shall be precluded from using or disclosing the specified information until the claim of privilege is resolved.

(2)

A party who received and disclosed the information before being notified of a claim of privilege or of protection under subdivision (a) shall, after that notification, immediately take reasonable steps to retrieve the information.

(d)

(1)If the receiving party contests the legitimacy of a claim of privilege or protection, he or she may seek a determination of the claim from the court by making a motion within 30 days of receiving the claim and presenting the information to the court conditionally under seal.

(2)

Until the legitimacy of the claim of privilege or protection is resolved, the receiving party shall preserve the information and keep it confidential and shall be precluded from using the information in any manner.