Cal. Health & Safety Code § 12006

The provisions of this part and the regulations adopted by the State Fire Marshal pursuant to this part do not apply when the use, handling, possession, storage and transportation is subject to the requirements of the Division of Occupational Safety and Health, Department of Industrial Relations, except as the provisions of this part and the regulations adopted by the State Fire Marshal may extend beyond the scope or authority of the Division of Occupational Safety and Health, Department of Industrial Relations.