California Code, Health and Safety Code - HSC § 1797.187

A peace officer as described in Section 830.1, subdivision (a) of Section 830.2, or subdivision (g) of Section 830.3 of the Penal Code, while in the service of the agency or local agency which employs him or her, shall be notified by the agency or local agency if the peace officer is exposed to a known carcinogen, as defined by the International Agency for Research on Cancer, or as defined by its director, during the investigation of any place where any controlled substance, as defined in Section 11007 is suspected of being manufactured, stored, transferred, or sold, or any toxic waste spills, accidents, leaks, explosions, or fires.

The Commission on Peace Officers Standards and Training basic training course, and other training courses as the commission determines appropriate, shall include, on or before January 1, 1990, instruction on, but not limited to, the identification and handling of possible carcinogenic materials and the potential health hazards associated with these materials, protective equipment, and clothing available to minimize contamination, handling, and disposing of materials and measures and procedures that can be adopted to minimize exposure to possible hazardous materials.