Cal. CCP § 689.040

(a) Notwithstanding any other provision of law, in the case of a writ of execution issued by a court of competent jurisdiction pursuant to Chapter 3 (commencing with Section 699.010) and Chapter 5 (commencing with Section 706.010) of Division 2, the local child support agency, when enforcing a support obligation pursuant to Division 17 (commencing with Section 17000) of the Family Code, may perform the duties of the levying officer, except that the local child support agency need not give itself the notices that the levying officer is required to serve on a judgment creditor or creditor or the notices that a judgment creditor or creditor is required to give to the levying officer.

(b) Notwithstanding subdivision (a) of Section 700.140, if the writ of execution is for a deposit or credits or personal property in the possession or under the control of a bank or savings and loan association, the local child support agency may deliver or mail the writ of execution to a centralized location designated by the bank or savings and loan association. If the writ of execution is received at the designated central location, it will apply to all deposits and credits and personal property held by the bank or savings and loan association regardless of the location of that property.