California Code, Civil Code - CIV § 9362

(a) Not later than 10 days after each of the following events, the public entity shall give notice to a claimant that has given a stop payment notice of the time within which an action to enforce payment of the claim stated in the stop payment notice must be commenced:

(b) The notice shall comply with the requirements of Chapter 2 (commencing with Section 8100) of Title 1.

(c) A public entity need not give notice under this section unless the claimant has paid the public entity ten dollars ($10) at the time of giving the stop payment notice.