California Code, Health and Safety Code - HSC § 79380

(a) The department shall develop sampling and analytical methods for the collection of methamphetamine residue.

(b) The department shall, to the extent funding is available, develop health-based target remediation standards for iodine, methyl iodide, and phosphine.

(c) To the extent that funding is available, the department, using guidance developed by the Office of Environmental Health Hazard Assessment, may develop additional health-based target remediation standards for additional precursors and byproducts of methamphetamine.

(d) The department shall adopt investigation and cleanup procedures for use in the remediation of sites contaminated by the illegal manufacturing of methamphetamine. The procedures shall ensure that contamination by the illegal manufacturing of methamphetamine can be remediated to meet the standards adopted pursuant to subdivisions (b) and (c), to protect the health and safety of all future occupants of the site.

(e) The department shall implement this section in accordance with Section 79375.