California Code, Health and Safety Code - HSC § 25400.26

(a) A property owner who receives an order issued pursuant to Section 25400.22 that property owned by that person is contaminated by a methamphetamine or fentanyl laboratory activity, or a property owner who owns property that is the subject of an order posted pursuant to subdivision (i) of Section 25400.22, shall utilize the services of an authorized contractor to remediate the contamination caused by the methamphetamine or fentanyl laboratory activity, in accordance with the procedures specified in this section.

(b) The property owner and the local health officer shall keep all required records documenting decontamination procedures for three years following certification that the property is habitable.

(c) The property owner or the property owner's authorized contractor shall submit a preliminary site assessment work plan to the local health officer for review no later than 30 days after demonstrating to the local health officer that an authorized contractor has been retained to remediate the contamination caused by the methamphetamine or fentanyl laboratory activity.

(f) The property owner shall complete remediation of all applicable portions of the contaminated property in accordance with this chapter no later than 90 days after the date that the PSA work plan has been approved by the local health officer. The local health officer may extend the date for completion of the remediation, in writing.

(g) If the owner of a mobilehome park performs the remediation on a manufactured home, mobilehome, or recreational vehicle that is property pursuant to paragraph (2) of subdivision (v) of Section 25400.11, the owner of the mobilehome park shall comply with the property owner requirements in subdivisions (a), (b), (c), (e), and (f), and the local health officer shall provide information to that owner as required by subdivision (d).