Cal. Health & Safety Code § 25915
(a) Notwithstanding any other provision of law, the owner of any building constructed prior to 1979, who knows that the building contains asbestos-containing construction materials, shall provide notice to all employees of that owner working within the building concerning all of the following:
(5) Potential health risks or impacts that may result from exposure to the asbestos in the building as identified in surveys or tests referred to in this section, or otherwise known to the owner.
The notice may contain a description and explanation of the health action levels or exposure standards established by the state or federal government. However, if the notice contains this description, the notice shall include, at least, a description and explanation of the no significant risk level established pursuant to Chapter 6.6 (commencing with Section 25249.5) of Division 20, and specified in Section 12711 of Title 22 of the California Code of Regulations, the school abatement clearance level specified in Section 49410.7 of the Education Code, and the action levels established by state and federal Occupational Safety and Health Act regulations.
The notice requirements specified in this subdivision shall not apply to an owner who elects to prepare an asbestos management plan pursuant to Section 25915.1. In those cases, the notice requirements specified in Section 25915.1 shall apply.