Concerning asbestos-containing building materials.

House Bill 1857 updates regulations concerning asbestos-containing building materials in Washington state, primarily impacting manufacturers, distributors, and owners of certain facilities. The bill lowers the definition of an "asbestos-containing building material" from over one percent to over 0.1 percent asbestos by weight or area, effective January 1, 2025, which expands the scope of materials subject to labeling requirements. It mandates that owners of manufacturing facilities (NAICS codes 31-33) conduct regular inspections for asbestos and maintain an asbestos management plan. The bill also amends existing prohibitions on the use of these materials in new construction and renovations, adding an exemption for commercial aggregates.