Cal. Pub. Res. Code § 42355

The Legislature finds and declares that it is the public policy of the state that environmental marketing claims, whether explicit or implied, should be substantiated by competent and reliable evidence to prevent deceiving or misleading consumers about the environmental impact of plastic bags. For consumers to have accurate and useful information about the environmental impact of plastic bags and packages, environmental marketing claims should adhere to uniform and recognized standards, including those standard specifications established by the American Society for Testing and Materials.