The PSA work plan shall include, but is not limited to, all of the following:

(a) The physical location of the property.

(b) A summary of the information obtained from law enforcement, the local health officer, and other involved local agencies. The summary shall include a discussion of the information’s relevance to the contamination, including areas suspected of being contaminated, and may include all of the following information:

(1) Duration of laboratory operation and number of batches cooked or processed.

(2) Hazardous chemicals known to have been manufactured.

(3) Recipes and methods used.

(4) Chemicals and equipment found, by location, used in connection with the manufacture or storage of the hazardous chemicals.

(5) Location of contaminated cooking and storage areas.

(6) Visual assessment of the severity of contamination inside and outside of the structure where the laboratory was located.

(7) Assessment of contamination of adjacent rooms, units, apartments, or structures.

(8) Disposal methods observed at or near the site, including dumping, burning, burial, venting, or drain disposal.

(9) A comparison of the chemicals on the manifest with known methods of manufacture in order to identify other potential contaminants.

(10) A determination as to whether the methamphetamine or fentanyl manufacturing method included the use of chemicals containing mercury or lead, including lead acetate, mercuric chloride, or mercuric nitrate.

(c) A description of the areas to be sampled and the basis for the selection of the areas. This element of the PSA work plan shall also document the decision process used in determining not to sample particular areas. The PSA work plan shall consider both primary and secondary areas of concern.

(1) The primary areas of concern included in the work plan shall include all the following areas:

(A) Any area that has obvious staining caused by the use or manufacture of hazardous chemicals.

(B) Any processing or cooking area, with contamination caused by spills, boilovers, or explosions, or by chemical fumes and gases created during cooking. The area may include floors, walls, ceilings, glassware, and containers, working surfaces, furniture, carpeting, draperies and other textile products, plumbing fixtures and drains, and heating and air-conditioning vents.

(C) Any disposal area, including such indoor areas as sinks, toilets, bathtubs, plumbing traps and floor drains, vents, vent fans, and chimney flues and such outdoor areas that may be contaminated by dumping or burning on or near soil, surface water, groundwater, sewer or storm systems, septic systems, and cesspools.

(D) Chemical storage areas that may be contaminated by spills, leaks, or open containers.

(2) The secondary areas of concern shall include all of the following:

(A) Any location where contamination may have migrated, including hallways or other high traffic areas.

(B) Common areas in multiple dwellings, apartments, and adjacent apartments or rooms, or mobilehome parks and special occupancy parks, including adjacent permanent buildings, manufactured homes, mobilehomes, or recreational vehicles, and the floors, walls, ceilings, furniture, carpeting, light fixtures, blinds, draperies, and other textile products in all of those areas.

(C) Common ventilation or plumbing systems in hotels, mobilehome parks, special occupancy parks, and multiple dwellings.

(d) Sampling protocols, analytical methods, and laboratories to use and their relevant certifications or accreditations.

(e) A description of areas and items that will be remediated in lieu of sampling, if any.

(Amended by Stats. 2019, Ch. 691, Sec. 16. (AB 1596) Effective January 1, 2020.)