Cal. Health & Safety Code § 25400.22
(a) No later than 10 working days after the date when a local health officer determines that property is contaminated pursuant to subdivision (b) of Section 25400.20, the local health officer shall do all of the following:
(1) Except as provided in paragraph (2), if the property is real property, record with the county recorder a lien on the property. The lien shall specify all of the following:
(2)
(3) A lien, restraint, or vehicle license stop issued pursuant to paragraph (2) shall specify all of the following:
(b)
(c)
(2) The local health officer shall not authorize the release of a lien, restraint, or vehicle license stop made pursuant to subdivision (a), until one of the following occurs:
(d) Except as otherwise specified in this section, an order issued pursuant to this section shall be served, either personally or by certified mail, return receipt requested, in the following manner:
(e) If the whereabouts of the person described in subdivision (d) are unknown and cannot be ascertained by the local health officer, in the exercise of reasonable diligence, and the local health officer makes an affidavit to that effect, the local health officer shall serve the order by personal service or by mailing a copy of the order by certified mail, postage prepaid, return receipt requested, as follows:
(f)
(g) The order issued pursuant to this section shall include all of the following information: