Cal. Food & Agric. Code § 5555

If, after service of the notice pursuant to Article 1.5 (commencing with Section 5561) the nuisance is not abated within the time prescribed in the notice or such time as may be mutually agreed upon by the commissioner and the record owner or person having charge or possession of the property, the commissioner shall proceed under the provisions of Article 2 (commencing with Section 5571).