AB 1642: Wildfires: contamination standards.

Official summary

Legislative Counsel’s Digest (official, as of the latest version). Written by nonpartisan legislative staff; reproduced verbatim.

Existing law establishes the Department of Toxic Substances Control, which regulates the handling and management of hazardous waste and hazardous materials, and establishes the Office of Environmental Health Hazard Assessment and the State Air Resources Board. Existing federal law sets action levels for lead in dust and emission standards for asbestos, and existing state law sets workplace standards for asbestos. Existing law authorizes local health officers to take specified actions to protect public health and establishes procedures for the remediation of certain contaminated properties.

This bill would require the Department of Toxic Substances Control, in consultation with the Office of Environmental Health Hazard Assessment and other relevant coordinating agencies, on or before December 31, 2028, to develop and adopt regulations pertaining to lead and asbestos testing, remediation, and restoration after a wildfire and, on or before December 31, 2029, to develop and publish guidance pertaining to specified other contaminants, as provided. The bill would require the State Air Resources Board, on or before December 31, 2028, to develop and publish guidance on indoor air contaminants following residential smoke damage from a wildfire, as provided. The bill would provide that, until the adoption of the regulations and guidance, specified lead and asbestos standards shall apply for wildfire-caused lead and asbestos remediation, as provided. The bill would require the department, in collaboration with the State Department of Education and other relevant state agencies, no later than July 1, 2028, to develop advisory, nonregulatory guidance for schools after a wildfire, as provided. The bill would exempt the regulations and guidance from the Administrative Procedure Act.

The bill would become operative only if AB 1795 of the 2025–26 Regular Session is enacted and takes effect on or before January 1, 2027.​​​​​​​​​​​​​​​​​​​​​​​​​

Sponsors

Sponsors by party (alphabetical): Democratic 5

“Support” is shown only as formal sponsorship recorded by the legislature. Roll-call votes are available on the official bill page.

Recent official actions

1. September 15, 2026Chaptered by Secretary of State - Chapter 239, Statutes of 2026.
2. September 15, 2026Approved by the Governor.
3. September 11, 2026Enrolled and presented to the Governor at 10 a.m.
4. August 31, 2026Senate amendments concurred in. To Engrossing and Enrolling. (Ayes 61. Noes 1. Page 7054.).
5. August 31, 2026Assembly Rule 63 suspended. (Page 7054.)
6. August 31, 2026In Assembly. Concurrence in Senate amendments pending.
7. August 31, 2026Read third time. Passed. Ordered to the Assembly. (Ayes 29. Noes 2.).
8. August 30, 2026Read second time. Ordered to third reading.
9. August 28, 2026Read third time and amended. Ordered to second reading.
10. August 13, 2026Read second time. Ordered to third reading.
11. August 13, 2026From committee: Do pass. (Ayes 5. Noes 0.) (August 13).
12. August 3, 2026In committee: Referred to APPR. suspense file.