Environmental law has its roots in federal, state, and local statutes. The most familiar of these are the federal Clean Water and Clean Air acts. In addition to these, there are the federal superfund and hazardous waste laws, and parallel state regulations. A typical environmental claim would be one seeking assessment or cleanup of a hazardous waste site or enforcement of an air or water permit. States may have additional laws, such as California’s Proposition 65 which requires identification and labeling of certain hazardous and carcinogenic substances.