Cal. R. 5.167
A party seeking emergency orders and a party providing written opposition must serve the papers on the other party or on the other party's attorney at the first reasonable opportunity before the hearing. Absent exceptional circumstances, no hearing may be conducted unless such service has been made. The court may waive this requirement in extraordinary circumstances if good cause is shown that imminent harm is likely if documents are provided to the other party before the hearing. This rule does not apply in cases filed under the Domestic Violence Prevention Act.
If the judicial officer signs the applicant's proposed emergency orders, the applicant must obtain and have the conformed copy of the orders personally served on all parties.
Cal. R. Ct. 5.167