California Code, Health and Safety Code - HSC § 46001

(a) On the power of a city, county, or city and county to adopt and enforce additional regulations, not in conflict therewith, imposing further conditions, restrictions, or limitations.

(b) On the power of any city, county, or city and county to declare, prohibit, and abate nuisances.

(c) On the power of the Attorney General, at the request of the office, the state department, or upon his own motion to bring an action in the name of the people of the State of California to enjoin any pollution or nuisance or to protect the natural resources of the state.

(d) On the power of a state agency in the enforcement or administration of any provision of law which it is specifically permitted or required to enforce or administer.

(e) On the right of any person to maintain at any time any appropriate action for relief against any private nuisance as defined in the Civil Code or for relief against any noise pollution.