Cal. Gov. Code § 51010

It is the intent of the Legislature, in enacting this chapter, that the State Fire Marshal shall exercise exclusive safety regulatory and enforcement authority over intrastate carbon dioxide and hazardous liquid pipelines and, to the extent authorized by agreement between the State Fire Marshal and the United States Secretary of Transportation, may act as agent for the United States Secretary of Transportation to implement the federal Hazardous Liquid Pipeline Safety Act of 1979 (49 U.S.C. Sec. 60101 et seq.) and federal pipeline safety regulations as to those portions of interstate pipelines located within this state, as necessary to obtain annual federal certification.