California Code, Code of Civil Procedure - CCP § 485.240

(a) Any defendant whose property has been attached pursuant to a writ issued under this chapter may apply for an order (1) that the right to attach order be set aside, the writ of attachment quashed, and any property levied upon pursuant to the writ be released, or (2) that the amount to be secured by the attachment be reduced as provided in Section 483.015. Such application shall be made by filing with the court and serving on the plaintiff a notice of motion.

(b) The notice of motion shall state the grounds on which the motion is based and shall be accompanied by an affidavit supporting any factual issues raised and points and authorities supporting any legal issues raised. It shall not be grounds to set aside an order that the plaintiff would not have suffered great or irreparable injury (within the meaning of Section 485.010) if issuance of the order had been delayed until the matter could have been heard on notice.

(c) At the hearing on the motion, the court shall determine whether the plaintiff is entitled to the right to attach order or whether the amount to be secured by the attachment should be reduced. If the court finds that the plaintiff is not entitled to the right to attach order, it shall order the right to attach order set aside, the writ of attachment quashed, and any property levied on pursuant to the writ released. If the court finds that the plaintiff is entitled to the right to attach order, thereafter the plaintiff may apply for additional writs pursuant to Article 2 (commencing with Section 484.310) or Article 3 (commencing with Section 484.510) of Chapter 4.

(d) The court's determinations shall be made upon the basis of the pleadings and other papers in the record; but, upon good cause shown, the court may receive and consider at the hearing additional evidence, oral or documentary, and additional points and authorities, or it may continue the hearing for the production of such additional evidence or points and authorities.

(e) The hearing provided for in this section shall take precedence over all other civil matters on the calendar of that day except older matters of the same character.